1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <math.h>
11 
12 #include <math.h>
13 #include <type_traits>
14 #include <cassert>
15 
16 #include "hexfloat.h"
17 
18 // convertible to int/float/double/etc
19 template <class T, int N=0>
20 struct Value {
21     operator T () { return T(N); }
22 };
23 
24 // See PR21083
25 // Ambiguous is a user-defined type that defines its own overloads of cmath
26 // functions. When the std overloads are candidates too (by using or adl),
27 // they should not interfere.
28 struct Ambiguous : std::true_type { // ADL
29     operator float () { return 0.f; }
30     operator double () { return 0.; }
31 };
32 Ambiguous abs(Ambiguous){ return Ambiguous(); }
33 Ambiguous acos(Ambiguous){ return Ambiguous(); }
34 Ambiguous asin(Ambiguous){ return Ambiguous(); }
35 Ambiguous atan(Ambiguous){ return Ambiguous(); }
36 Ambiguous atan2(Ambiguous, Ambiguous){ return Ambiguous(); }
37 Ambiguous ceil(Ambiguous){ return Ambiguous(); }
38 Ambiguous cos(Ambiguous){ return Ambiguous(); }
39 Ambiguous cosh(Ambiguous){ return Ambiguous(); }
40 Ambiguous exp(Ambiguous){ return Ambiguous(); }
41 Ambiguous fabs(Ambiguous){ return Ambiguous(); }
42 Ambiguous floor(Ambiguous){ return Ambiguous(); }
43 Ambiguous fmod(Ambiguous, Ambiguous){ return Ambiguous(); }
44 Ambiguous frexp(Ambiguous, int*){ return Ambiguous(); }
45 Ambiguous ldexp(Ambiguous, int){ return Ambiguous(); }
46 Ambiguous log(Ambiguous){ return Ambiguous(); }
47 Ambiguous log10(Ambiguous){ return Ambiguous(); }
48 Ambiguous modf(Ambiguous, Ambiguous*){ return Ambiguous(); }
49 Ambiguous pow(Ambiguous, Ambiguous){ return Ambiguous(); }
50 Ambiguous sin(Ambiguous){ return Ambiguous(); }
51 Ambiguous sinh(Ambiguous){ return Ambiguous(); }
52 Ambiguous sqrt(Ambiguous){ return Ambiguous(); }
53 Ambiguous tan(Ambiguous){ return Ambiguous(); }
54 Ambiguous tanh(Ambiguous){ return Ambiguous(); }
55 Ambiguous signbit(Ambiguous){ return Ambiguous(); }
56 Ambiguous fpclassify(Ambiguous){ return Ambiguous(); }
57 Ambiguous isfinite(Ambiguous){ return Ambiguous(); }
58 Ambiguous isnormal(Ambiguous){ return Ambiguous(); }
59 Ambiguous isgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
60 Ambiguous isgreaterequal(Ambiguous, Ambiguous){ return Ambiguous(); }
61 Ambiguous isless(Ambiguous, Ambiguous){ return Ambiguous(); }
62 Ambiguous islessequal(Ambiguous, Ambiguous){ return Ambiguous(); }
63 Ambiguous islessgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
64 Ambiguous isunordered(Ambiguous, Ambiguous){ return Ambiguous(); }
65 Ambiguous acosh(Ambiguous){ return Ambiguous(); }
66 Ambiguous asinh(Ambiguous){ return Ambiguous(); }
67 Ambiguous atanh(Ambiguous){ return Ambiguous(); }
68 Ambiguous cbrt(Ambiguous){ return Ambiguous(); }
69 Ambiguous copysign(Ambiguous, Ambiguous){ return Ambiguous(); }
70 Ambiguous erf(Ambiguous){ return Ambiguous(); }
71 Ambiguous erfc(Ambiguous){ return Ambiguous(); }
72 Ambiguous exp2(Ambiguous){ return Ambiguous(); }
73 Ambiguous expm1(Ambiguous){ return Ambiguous(); }
74 Ambiguous fdim(Ambiguous, Ambiguous){ return Ambiguous(); }
75 Ambiguous fma(Ambiguous, Ambiguous, Ambiguous){ return Ambiguous(); }
76 Ambiguous fmax(Ambiguous, Ambiguous){ return Ambiguous(); }
77 Ambiguous fmin(Ambiguous, Ambiguous){ return Ambiguous(); }
78 Ambiguous hypot(Ambiguous, Ambiguous){ return Ambiguous(); }
79 Ambiguous ilogb(Ambiguous){ return Ambiguous(); }
80 Ambiguous lgamma(Ambiguous){ return Ambiguous(); }
81 Ambiguous llrint(Ambiguous){ return Ambiguous(); }
82 Ambiguous llround(Ambiguous){ return Ambiguous(); }
83 Ambiguous log1p(Ambiguous){ return Ambiguous(); }
84 Ambiguous log2(Ambiguous){ return Ambiguous(); }
85 Ambiguous logb(Ambiguous){ return Ambiguous(); }
86 Ambiguous lrint(Ambiguous){ return Ambiguous(); }
87 Ambiguous lround(Ambiguous){ return Ambiguous(); }
88 Ambiguous nearbyint(Ambiguous){ return Ambiguous(); }
89 Ambiguous nextafter(Ambiguous, Ambiguous){ return Ambiguous(); }
90 Ambiguous nexttoward(Ambiguous, Ambiguous){ return Ambiguous(); }
91 Ambiguous remainder(Ambiguous, Ambiguous){ return Ambiguous(); }
92 Ambiguous remquo(Ambiguous, Ambiguous, int*){ return Ambiguous(); }
93 Ambiguous rint(Ambiguous){ return Ambiguous(); }
94 Ambiguous round(Ambiguous){ return Ambiguous(); }
95 Ambiguous scalbln(Ambiguous, Ambiguous){ return Ambiguous(); }
96 Ambiguous scalbn(Ambiguous, Ambiguous){ return Ambiguous(); }
97 Ambiguous tgamma(Ambiguous){ return Ambiguous(); }
98 Ambiguous trunc(Ambiguous){ return Ambiguous(); }
99 
100 void test_abs()
101 {
102     static_assert((std::is_same<decltype(abs((float)0)), float>::value), "");
103     static_assert((std::is_same<decltype(abs((double)0)), double>::value), "");
104     static_assert((std::is_same<decltype(abs((long double)0)), long double>::value), "");
105     static_assert((std::is_same<decltype(abs(Ambiguous())), Ambiguous>::value), "");
106     assert(abs(-1.) == 1);
107 }
108 
109 void test_acos()
110 {
111     static_assert((std::is_same<decltype(acos((float)0)), float>::value), "");
112     static_assert((std::is_same<decltype(acos((bool)0)), double>::value), "");
113     static_assert((std::is_same<decltype(acos((unsigned short)0)), double>::value), "");
114     static_assert((std::is_same<decltype(acos((int)0)), double>::value), "");
115     static_assert((std::is_same<decltype(acos((unsigned int)0)), double>::value), "");
116     static_assert((std::is_same<decltype(acos((long)0)), double>::value), "");
117     static_assert((std::is_same<decltype(acos((unsigned long)0)), double>::value), "");
118     static_assert((std::is_same<decltype(acos((long long)0)), double>::value), "");
119     static_assert((std::is_same<decltype(acos((unsigned long long)0)), double>::value), "");
120     static_assert((std::is_same<decltype(acos((double)0)), double>::value), "");
121     static_assert((std::is_same<decltype(acos((long double)0)), long double>::value), "");
122     static_assert((std::is_same<decltype(acosf(0)), float>::value), "");
123     static_assert((std::is_same<decltype(acosl(0)), long double>::value), "");
124     static_assert((std::is_same<decltype(acos(Ambiguous())), Ambiguous>::value), "");
125     assert(acos(1) == 0);
126 }
127 
128 void test_asin()
129 {
130     static_assert((std::is_same<decltype(asin((float)0)), float>::value), "");
131     static_assert((std::is_same<decltype(asin((bool)0)), double>::value), "");
132     static_assert((std::is_same<decltype(asin((unsigned short)0)), double>::value), "");
133     static_assert((std::is_same<decltype(asin((int)0)), double>::value), "");
134     static_assert((std::is_same<decltype(asin((unsigned int)0)), double>::value), "");
135     static_assert((std::is_same<decltype(asin((long)0)), double>::value), "");
136     static_assert((std::is_same<decltype(asin((unsigned long)0)), double>::value), "");
137     static_assert((std::is_same<decltype(asin((long long)0)), double>::value), "");
138     static_assert((std::is_same<decltype(asin((unsigned long long)0)), double>::value), "");
139     static_assert((std::is_same<decltype(asin((double)0)), double>::value), "");
140     static_assert((std::is_same<decltype(asin((long double)0)), long double>::value), "");
141     static_assert((std::is_same<decltype(asinf(0)), float>::value), "");
142     static_assert((std::is_same<decltype(asinl(0)), long double>::value), "");
143     static_assert((std::is_same<decltype(asin(Ambiguous())), Ambiguous>::value), "");
144     assert(asin(0) == 0);
145 }
146 
147 void test_atan()
148 {
149     static_assert((std::is_same<decltype(atan((float)0)), float>::value), "");
150     static_assert((std::is_same<decltype(atan((bool)0)), double>::value), "");
151     static_assert((std::is_same<decltype(atan((unsigned short)0)), double>::value), "");
152     static_assert((std::is_same<decltype(atan((int)0)), double>::value), "");
153     static_assert((std::is_same<decltype(atan((unsigned int)0)), double>::value), "");
154     static_assert((std::is_same<decltype(atan((long)0)), double>::value), "");
155     static_assert((std::is_same<decltype(atan((unsigned long)0)), double>::value), "");
156     static_assert((std::is_same<decltype(atan((long long)0)), double>::value), "");
157     static_assert((std::is_same<decltype(atan((unsigned long long)0)), double>::value), "");
158     static_assert((std::is_same<decltype(atan((double)0)), double>::value), "");
159     static_assert((std::is_same<decltype(atan((long double)0)), long double>::value), "");
160     static_assert((std::is_same<decltype(atanf(0)), float>::value), "");
161     static_assert((std::is_same<decltype(atanl(0)), long double>::value), "");
162     static_assert((std::is_same<decltype(atan(Ambiguous())), Ambiguous>::value), "");
163     assert(atan(0) == 0);
164 }
165 
166 void test_atan2()
167 {
168     static_assert((std::is_same<decltype(atan2((float)0, (float)0)), float>::value), "");
169     static_assert((std::is_same<decltype(atan2((bool)0, (float)0)), double>::value), "");
170     static_assert((std::is_same<decltype(atan2((unsigned short)0, (double)0)), double>::value), "");
171     static_assert((std::is_same<decltype(atan2((int)0, (long double)0)), long double>::value), "");
172     static_assert((std::is_same<decltype(atan2((float)0, (unsigned int)0)), double>::value), "");
173     static_assert((std::is_same<decltype(atan2((double)0, (long)0)), double>::value), "");
174     static_assert((std::is_same<decltype(atan2((long double)0, (unsigned long)0)), long double>::value), "");
175     static_assert((std::is_same<decltype(atan2((int)0, (long long)0)), double>::value), "");
176     static_assert((std::is_same<decltype(atan2((int)0, (unsigned long long)0)), double>::value), "");
177     static_assert((std::is_same<decltype(atan2((double)0, (double)0)), double>::value), "");
178     static_assert((std::is_same<decltype(atan2((long double)0, (long double)0)), long double>::value), "");
179     static_assert((std::is_same<decltype(atan2((float)0, (double)0)), double>::value), "");
180     static_assert((std::is_same<decltype(atan2((float)0, (long double)0)), long double>::value), "");
181     static_assert((std::is_same<decltype(atan2((double)0, (long double)0)), long double>::value), "");
182     static_assert((std::is_same<decltype(atan2f(0,0)), float>::value), "");
183     static_assert((std::is_same<decltype(atan2l(0,0)), long double>::value), "");
184     static_assert((std::is_same<decltype(atan2((int)0, (int)0)), double>::value), "");
185     static_assert((std::is_same<decltype(atan2(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
186     assert(atan2(0,1) == 0);
187 }
188 
189 void test_ceil()
190 {
191     static_assert((std::is_same<decltype(ceil((float)0)), float>::value), "");
192     static_assert((std::is_same<decltype(ceil((bool)0)), double>::value), "");
193     static_assert((std::is_same<decltype(ceil((unsigned short)0)), double>::value), "");
194     static_assert((std::is_same<decltype(ceil((int)0)), double>::value), "");
195     static_assert((std::is_same<decltype(ceil((unsigned int)0)), double>::value), "");
196     static_assert((std::is_same<decltype(ceil((long)0)), double>::value), "");
197     static_assert((std::is_same<decltype(ceil((unsigned long)0)), double>::value), "");
198     static_assert((std::is_same<decltype(ceil((long long)0)), double>::value), "");
199     static_assert((std::is_same<decltype(ceil((unsigned long long)0)), double>::value), "");
200     static_assert((std::is_same<decltype(ceil((double)0)), double>::value), "");
201     static_assert((std::is_same<decltype(ceil((long double)0)), long double>::value), "");
202     static_assert((std::is_same<decltype(ceilf(0)), float>::value), "");
203     static_assert((std::is_same<decltype(ceill(0)), long double>::value), "");
204     static_assert((std::is_same<decltype(ceil(Ambiguous())), Ambiguous>::value), "");
205     assert(ceil(0) == 0);
206 }
207 
208 void test_cos()
209 {
210     static_assert((std::is_same<decltype(cos((float)0)), float>::value), "");
211     static_assert((std::is_same<decltype(cos((bool)0)), double>::value), "");
212     static_assert((std::is_same<decltype(cos((unsigned short)0)), double>::value), "");
213     static_assert((std::is_same<decltype(cos((int)0)), double>::value), "");
214     static_assert((std::is_same<decltype(cos((unsigned int)0)), double>::value), "");
215     static_assert((std::is_same<decltype(cos((long)0)), double>::value), "");
216     static_assert((std::is_same<decltype(cos((unsigned long)0)), double>::value), "");
217     static_assert((std::is_same<decltype(cos((long long)0)), double>::value), "");
218     static_assert((std::is_same<decltype(cos((unsigned long long)0)), double>::value), "");
219     static_assert((std::is_same<decltype(cos((double)0)), double>::value), "");
220     static_assert((std::is_same<decltype(cos((long double)0)), long double>::value), "");
221     static_assert((std::is_same<decltype(cosf(0)), float>::value), "");
222     static_assert((std::is_same<decltype(cosl(0)), long double>::value), "");
223     static_assert((std::is_same<decltype(cos(Ambiguous())), Ambiguous>::value), "");
224     assert(cos(0) == 1);
225 }
226 
227 void test_cosh()
228 {
229     static_assert((std::is_same<decltype(cosh((float)0)), float>::value), "");
230     static_assert((std::is_same<decltype(cosh((bool)0)), double>::value), "");
231     static_assert((std::is_same<decltype(cosh((unsigned short)0)), double>::value), "");
232     static_assert((std::is_same<decltype(cosh((int)0)), double>::value), "");
233     static_assert((std::is_same<decltype(cosh((unsigned int)0)), double>::value), "");
234     static_assert((std::is_same<decltype(cosh((long)0)), double>::value), "");
235     static_assert((std::is_same<decltype(cosh((unsigned long)0)), double>::value), "");
236     static_assert((std::is_same<decltype(cosh((long long)0)), double>::value), "");
237     static_assert((std::is_same<decltype(cosh((unsigned long long)0)), double>::value), "");
238     static_assert((std::is_same<decltype(cosh((double)0)), double>::value), "");
239     static_assert((std::is_same<decltype(cosh((long double)0)), long double>::value), "");
240     static_assert((std::is_same<decltype(coshf(0)), float>::value), "");
241     static_assert((std::is_same<decltype(coshl(0)), long double>::value), "");
242     static_assert((std::is_same<decltype(cosh(Ambiguous())), Ambiguous>::value), "");
243     assert(cosh(0) == 1);
244 }
245 
246 void test_exp()
247 {
248     static_assert((std::is_same<decltype(exp((float)0)), float>::value), "");
249     static_assert((std::is_same<decltype(exp((bool)0)), double>::value), "");
250     static_assert((std::is_same<decltype(exp((unsigned short)0)), double>::value), "");
251     static_assert((std::is_same<decltype(exp((int)0)), double>::value), "");
252     static_assert((std::is_same<decltype(exp((unsigned int)0)), double>::value), "");
253     static_assert((std::is_same<decltype(exp((long)0)), double>::value), "");
254     static_assert((std::is_same<decltype(exp((unsigned long)0)), double>::value), "");
255     static_assert((std::is_same<decltype(exp((long long)0)), double>::value), "");
256     static_assert((std::is_same<decltype(exp((unsigned long long)0)), double>::value), "");
257     static_assert((std::is_same<decltype(exp((double)0)), double>::value), "");
258     static_assert((std::is_same<decltype(exp((long double)0)), long double>::value), "");
259     static_assert((std::is_same<decltype(expf(0)), float>::value), "");
260     static_assert((std::is_same<decltype(expl(0)), long double>::value), "");
261     static_assert((std::is_same<decltype(exp(Ambiguous())), Ambiguous>::value), "");
262     assert(exp(0) == 1);
263 }
264 
265 void test_fabs()
266 {
267     static_assert((std::is_same<decltype(fabs((float)0)), float>::value), "");
268     static_assert((std::is_same<decltype(fabs((bool)0)), double>::value), "");
269     static_assert((std::is_same<decltype(fabs((unsigned short)0)), double>::value), "");
270     static_assert((std::is_same<decltype(fabs((int)0)), double>::value), "");
271     static_assert((std::is_same<decltype(fabs((unsigned int)0)), double>::value), "");
272     static_assert((std::is_same<decltype(fabs((long)0)), double>::value), "");
273     static_assert((std::is_same<decltype(fabs((unsigned long)0)), double>::value), "");
274     static_assert((std::is_same<decltype(fabs((long long)0)), double>::value), "");
275     static_assert((std::is_same<decltype(fabs((unsigned long long)0)), double>::value), "");
276     static_assert((std::is_same<decltype(fabs((double)0)), double>::value), "");
277     static_assert((std::is_same<decltype(fabs((long double)0)), long double>::value), "");
278     static_assert((std::is_same<decltype(fabsf(0.0f)), float>::value), "");
279     static_assert((std::is_same<decltype(fabsl(0.0L)), long double>::value), "");
280     static_assert((std::is_same<decltype(fabs(Ambiguous())), Ambiguous>::value), "");
281     assert(fabs(-1) == 1);
282 }
283 
284 void test_floor()
285 {
286     static_assert((std::is_same<decltype(floor((float)0)), float>::value), "");
287     static_assert((std::is_same<decltype(floor((bool)0)), double>::value), "");
288     static_assert((std::is_same<decltype(floor((unsigned short)0)), double>::value), "");
289     static_assert((std::is_same<decltype(floor((int)0)), double>::value), "");
290     static_assert((std::is_same<decltype(floor((unsigned int)0)), double>::value), "");
291     static_assert((std::is_same<decltype(floor((long)0)), double>::value), "");
292     static_assert((std::is_same<decltype(floor((unsigned long)0)), double>::value), "");
293     static_assert((std::is_same<decltype(floor((long long)0)), double>::value), "");
294     static_assert((std::is_same<decltype(floor((unsigned long long)0)), double>::value), "");
295     static_assert((std::is_same<decltype(floor((double)0)), double>::value), "");
296     static_assert((std::is_same<decltype(floor((long double)0)), long double>::value), "");
297     static_assert((std::is_same<decltype(floorf(0)), float>::value), "");
298     static_assert((std::is_same<decltype(floorl(0)), long double>::value), "");
299     static_assert((std::is_same<decltype(floor(Ambiguous())), Ambiguous>::value), "");
300     assert(floor(1) == 1);
301 }
302 
303 void test_fmod()
304 {
305     static_assert((std::is_same<decltype(fmod((float)0, (float)0)), float>::value), "");
306     static_assert((std::is_same<decltype(fmod((bool)0, (float)0)), double>::value), "");
307     static_assert((std::is_same<decltype(fmod((unsigned short)0, (double)0)), double>::value), "");
308     static_assert((std::is_same<decltype(fmod((int)0, (long double)0)), long double>::value), "");
309     static_assert((std::is_same<decltype(fmod((float)0, (unsigned int)0)), double>::value), "");
310     static_assert((std::is_same<decltype(fmod((double)0, (long)0)), double>::value), "");
311     static_assert((std::is_same<decltype(fmod((long double)0, (unsigned long)0)), long double>::value), "");
312     static_assert((std::is_same<decltype(fmod((int)0, (long long)0)), double>::value), "");
313     static_assert((std::is_same<decltype(fmod((int)0, (unsigned long long)0)), double>::value), "");
314     static_assert((std::is_same<decltype(fmod((double)0, (double)0)), double>::value), "");
315     static_assert((std::is_same<decltype(fmod((long double)0, (long double)0)), long double>::value), "");
316     static_assert((std::is_same<decltype(fmod((float)0, (double)0)), double>::value), "");
317     static_assert((std::is_same<decltype(fmod((float)0, (long double)0)), long double>::value), "");
318     static_assert((std::is_same<decltype(fmod((double)0, (long double)0)), long double>::value), "");
319     static_assert((std::is_same<decltype(fmodf(0,0)), float>::value), "");
320     static_assert((std::is_same<decltype(fmodl(0,0)), long double>::value), "");
321     static_assert((std::is_same<decltype(fmod((int)0, (int)0)), double>::value), "");
322     static_assert((std::is_same<decltype(fmod(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
323     assert(fmod(1.5,1) == .5);
324 }
325 
326 void test_frexp()
327 {
328     int ip;
329     static_assert((std::is_same<decltype(frexp((float)0, &ip)), float>::value), "");
330     static_assert((std::is_same<decltype(frexp((bool)0, &ip)), double>::value), "");
331     static_assert((std::is_same<decltype(frexp((unsigned short)0, &ip)), double>::value), "");
332     static_assert((std::is_same<decltype(frexp((int)0, &ip)), double>::value), "");
333     static_assert((std::is_same<decltype(frexp((unsigned int)0, &ip)), double>::value), "");
334     static_assert((std::is_same<decltype(frexp((long)0, &ip)), double>::value), "");
335     static_assert((std::is_same<decltype(frexp((unsigned long)0, &ip)), double>::value), "");
336     static_assert((std::is_same<decltype(frexp((long long)0, &ip)), double>::value), "");
337     static_assert((std::is_same<decltype(frexp((unsigned long long)0, &ip)), double>::value), "");
338     static_assert((std::is_same<decltype(frexp((double)0, &ip)), double>::value), "");
339     static_assert((std::is_same<decltype(frexp((long double)0, &ip)), long double>::value), "");
340     static_assert((std::is_same<decltype(frexpf(0, &ip)), float>::value), "");
341     static_assert((std::is_same<decltype(frexpl(0, &ip)), long double>::value), "");
342     static_assert((std::is_same<decltype(frexp(Ambiguous(), &ip)), Ambiguous>::value), "");
343     assert(frexp(0, &ip) == 0);
344 }
345 
346 void test_ldexp()
347 {
348     int ip = 1;
349     static_assert((std::is_same<decltype(ldexp((float)0, ip)), float>::value), "");
350     static_assert((std::is_same<decltype(ldexp((bool)0, ip)), double>::value), "");
351     static_assert((std::is_same<decltype(ldexp((unsigned short)0, ip)), double>::value), "");
352     static_assert((std::is_same<decltype(ldexp((int)0, ip)), double>::value), "");
353     static_assert((std::is_same<decltype(ldexp((unsigned int)0, ip)), double>::value), "");
354     static_assert((std::is_same<decltype(ldexp((long)0, ip)), double>::value), "");
355     static_assert((std::is_same<decltype(ldexp((unsigned long)0, ip)), double>::value), "");
356     static_assert((std::is_same<decltype(ldexp((long long)0, ip)), double>::value), "");
357     static_assert((std::is_same<decltype(ldexp((unsigned long long)0, ip)), double>::value), "");
358     static_assert((std::is_same<decltype(ldexp((double)0, ip)), double>::value), "");
359     static_assert((std::is_same<decltype(ldexp((long double)0, ip)), long double>::value), "");
360     static_assert((std::is_same<decltype(ldexpf(0, ip)), float>::value), "");
361     static_assert((std::is_same<decltype(ldexpl(0, ip)), long double>::value), "");
362     static_assert((std::is_same<decltype(ldexp(Ambiguous(), ip)), Ambiguous>::value), "");
363     assert(ldexp(1, ip) == 2);
364 }
365 
366 void test_log()
367 {
368     static_assert((std::is_same<decltype(log((float)0)), float>::value), "");
369     static_assert((std::is_same<decltype(log((bool)0)), double>::value), "");
370     static_assert((std::is_same<decltype(log((unsigned short)0)), double>::value), "");
371     static_assert((std::is_same<decltype(log((int)0)), double>::value), "");
372     static_assert((std::is_same<decltype(log((unsigned int)0)), double>::value), "");
373     static_assert((std::is_same<decltype(log((long)0)), double>::value), "");
374     static_assert((std::is_same<decltype(log((unsigned long)0)), double>::value), "");
375     static_assert((std::is_same<decltype(log((long long)0)), double>::value), "");
376     static_assert((std::is_same<decltype(log((unsigned long long)0)), double>::value), "");
377     static_assert((std::is_same<decltype(log((double)0)), double>::value), "");
378     static_assert((std::is_same<decltype(log((long double)0)), long double>::value), "");
379     static_assert((std::is_same<decltype(logf(0)), float>::value), "");
380     static_assert((std::is_same<decltype(logl(0)), long double>::value), "");
381     static_assert((std::is_same<decltype(log(Ambiguous())), Ambiguous>::value), "");
382     assert(log(1) == 0);
383 }
384 
385 void test_log10()
386 {
387     static_assert((std::is_same<decltype(log10((float)0)), float>::value), "");
388     static_assert((std::is_same<decltype(log10((bool)0)), double>::value), "");
389     static_assert((std::is_same<decltype(log10((unsigned short)0)), double>::value), "");
390     static_assert((std::is_same<decltype(log10((int)0)), double>::value), "");
391     static_assert((std::is_same<decltype(log10((unsigned int)0)), double>::value), "");
392     static_assert((std::is_same<decltype(log10((long)0)), double>::value), "");
393     static_assert((std::is_same<decltype(log10((unsigned long)0)), double>::value), "");
394     static_assert((std::is_same<decltype(log10((long long)0)), double>::value), "");
395     static_assert((std::is_same<decltype(log10((unsigned long long)0)), double>::value), "");
396     static_assert((std::is_same<decltype(log10((double)0)), double>::value), "");
397     static_assert((std::is_same<decltype(log10((long double)0)), long double>::value), "");
398     static_assert((std::is_same<decltype(log10f(0)), float>::value), "");
399     static_assert((std::is_same<decltype(log10l(0)), long double>::value), "");
400     static_assert((std::is_same<decltype(log10(Ambiguous())), Ambiguous>::value), "");
401     assert(log10(1) == 0);
402 }
403 
404 void test_modf()
405 {
406     static_assert((std::is_same<decltype(modf((float)0, (float*)0)), float>::value), "");
407     static_assert((std::is_same<decltype(modf((double)0, (double*)0)), double>::value), "");
408     static_assert((std::is_same<decltype(modf((long double)0, (long double*)0)), long double>::value), "");
409     static_assert((std::is_same<decltype(modff(0, (float*)0)), float>::value), "");
410     static_assert((std::is_same<decltype(modfl(0, (long double*)0)), long double>::value), "");
411     static_assert((std::is_same<decltype(modf(Ambiguous(), (Ambiguous*)0)), Ambiguous>::value), "");
412     double i;
413     assert(modf(1., &i) == 0);
414 }
415 
416 void test_pow()
417 {
418     static_assert((std::is_same<decltype(pow((float)0, (float)0)), float>::value), "");
419     static_assert((std::is_same<decltype(pow((bool)0, (float)0)), double>::value), "");
420     static_assert((std::is_same<decltype(pow((unsigned short)0, (double)0)), double>::value), "");
421     static_assert((std::is_same<decltype(pow((int)0, (long double)0)), long double>::value), "");
422     static_assert((std::is_same<decltype(pow((float)0, (unsigned int)0)), double>::value), "");
423     static_assert((std::is_same<decltype(pow((double)0, (long)0)), double>::value), "");
424     static_assert((std::is_same<decltype(pow((long double)0, (unsigned long)0)), long double>::value), "");
425     static_assert((std::is_same<decltype(pow((int)0, (long long)0)), double>::value), "");
426     static_assert((std::is_same<decltype(pow((int)0, (unsigned long long)0)), double>::value), "");
427     static_assert((std::is_same<decltype(pow((double)0, (double)0)), double>::value), "");
428     static_assert((std::is_same<decltype(pow((long double)0, (long double)0)), long double>::value), "");
429     static_assert((std::is_same<decltype(pow((float)0, (double)0)), double>::value), "");
430     static_assert((std::is_same<decltype(pow((float)0, (long double)0)), long double>::value), "");
431     static_assert((std::is_same<decltype(pow((double)0, (long double)0)), long double>::value), "");
432     static_assert((std::is_same<decltype(powf(0,0)), float>::value), "");
433     static_assert((std::is_same<decltype(powl(0,0)), long double>::value), "");
434     static_assert((std::is_same<decltype(pow((int)0, (int)0)), double>::value), "");
435 //     static_assert((std::is_same<decltype(pow(Value<int>(), (int)0)), double>::value), "");
436 //     static_assert((std::is_same<decltype(pow(Value<long double>(), (float)0)), long double>::value), "");
437 //     static_assert((std::is_same<decltype(pow((float) 0, Value<float>())), float>::value), "");
438     static_assert((std::is_same<decltype(pow(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
439     assert(pow(1,1) == 1);
440 //     assert(pow(Value<int,1>(), Value<float,1>())  == 1);
441 //     assert(pow(1.0f, Value<double,1>()) == 1);
442 //     assert(pow(1.0, Value<int,1>()) == 1);
443 //     assert(pow(Value<long double,1>(), 1LL) == 1);
444 }
445 
446 void test_sin()
447 {
448     static_assert((std::is_same<decltype(sin((float)0)), float>::value), "");
449     static_assert((std::is_same<decltype(sin((bool)0)), double>::value), "");
450     static_assert((std::is_same<decltype(sin((unsigned short)0)), double>::value), "");
451     static_assert((std::is_same<decltype(sin((int)0)), double>::value), "");
452     static_assert((std::is_same<decltype(sin((unsigned int)0)), double>::value), "");
453     static_assert((std::is_same<decltype(sin((long)0)), double>::value), "");
454     static_assert((std::is_same<decltype(sin((unsigned long)0)), double>::value), "");
455     static_assert((std::is_same<decltype(sin((long long)0)), double>::value), "");
456     static_assert((std::is_same<decltype(sin((unsigned long long)0)), double>::value), "");
457     static_assert((std::is_same<decltype(sin((double)0)), double>::value), "");
458     static_assert((std::is_same<decltype(sin((long double)0)), long double>::value), "");
459     static_assert((std::is_same<decltype(sinf(0)), float>::value), "");
460     static_assert((std::is_same<decltype(sinl(0)), long double>::value), "");
461     static_assert((std::is_same<decltype(sin(Ambiguous())), Ambiguous>::value), "");
462     assert(sin(0) == 0);
463 }
464 
465 void test_sinh()
466 {
467     static_assert((std::is_same<decltype(sinh((float)0)), float>::value), "");
468     static_assert((std::is_same<decltype(sinh((bool)0)), double>::value), "");
469     static_assert((std::is_same<decltype(sinh((unsigned short)0)), double>::value), "");
470     static_assert((std::is_same<decltype(sinh((int)0)), double>::value), "");
471     static_assert((std::is_same<decltype(sinh((unsigned int)0)), double>::value), "");
472     static_assert((std::is_same<decltype(sinh((long)0)), double>::value), "");
473     static_assert((std::is_same<decltype(sinh((unsigned long)0)), double>::value), "");
474     static_assert((std::is_same<decltype(sinh((long long)0)), double>::value), "");
475     static_assert((std::is_same<decltype(sinh((unsigned long long)0)), double>::value), "");
476     static_assert((std::is_same<decltype(sinh((double)0)), double>::value), "");
477     static_assert((std::is_same<decltype(sinh((long double)0)), long double>::value), "");
478     static_assert((std::is_same<decltype(sinhf(0)), float>::value), "");
479     static_assert((std::is_same<decltype(sinhl(0)), long double>::value), "");
480     static_assert((std::is_same<decltype(sinh(Ambiguous())), Ambiguous>::value), "");
481     assert(sinh(0) == 0);
482 }
483 
484 void test_sqrt()
485 {
486     static_assert((std::is_same<decltype(sqrt((float)0)), float>::value), "");
487     static_assert((std::is_same<decltype(sqrt((bool)0)), double>::value), "");
488     static_assert((std::is_same<decltype(sqrt((unsigned short)0)), double>::value), "");
489     static_assert((std::is_same<decltype(sqrt((int)0)), double>::value), "");
490     static_assert((std::is_same<decltype(sqrt((unsigned int)0)), double>::value), "");
491     static_assert((std::is_same<decltype(sqrt((long)0)), double>::value), "");
492     static_assert((std::is_same<decltype(sqrt((unsigned long)0)), double>::value), "");
493     static_assert((std::is_same<decltype(sqrt((long long)0)), double>::value), "");
494     static_assert((std::is_same<decltype(sqrt((unsigned long long)0)), double>::value), "");
495     static_assert((std::is_same<decltype(sqrt((double)0)), double>::value), "");
496     static_assert((std::is_same<decltype(sqrt((long double)0)), long double>::value), "");
497     static_assert((std::is_same<decltype(sqrtf(0)), float>::value), "");
498     static_assert((std::is_same<decltype(sqrtl(0)), long double>::value), "");
499     static_assert((std::is_same<decltype(sqrt(Ambiguous())), Ambiguous>::value), "");
500     assert(sqrt(4) == 2);
501 }
502 
503 void test_tan()
504 {
505     static_assert((std::is_same<decltype(tan((float)0)), float>::value), "");
506     static_assert((std::is_same<decltype(tan((bool)0)), double>::value), "");
507     static_assert((std::is_same<decltype(tan((unsigned short)0)), double>::value), "");
508     static_assert((std::is_same<decltype(tan((int)0)), double>::value), "");
509     static_assert((std::is_same<decltype(tan((unsigned int)0)), double>::value), "");
510     static_assert((std::is_same<decltype(tan((long)0)), double>::value), "");
511     static_assert((std::is_same<decltype(tan((unsigned long)0)), double>::value), "");
512     static_assert((std::is_same<decltype(tan((long long)0)), double>::value), "");
513     static_assert((std::is_same<decltype(tan((unsigned long long)0)), double>::value), "");
514     static_assert((std::is_same<decltype(tan((double)0)), double>::value), "");
515     static_assert((std::is_same<decltype(tan((long double)0)), long double>::value), "");
516     static_assert((std::is_same<decltype(tanf(0)), float>::value), "");
517     static_assert((std::is_same<decltype(tanl(0)), long double>::value), "");
518     static_assert((std::is_same<decltype(tan(Ambiguous())), Ambiguous>::value), "");
519     assert(tan(0) == 0);
520 }
521 
522 void test_tanh()
523 {
524     static_assert((std::is_same<decltype(tanh((float)0)), float>::value), "");
525     static_assert((std::is_same<decltype(tanh((bool)0)), double>::value), "");
526     static_assert((std::is_same<decltype(tanh((unsigned short)0)), double>::value), "");
527     static_assert((std::is_same<decltype(tanh((int)0)), double>::value), "");
528     static_assert((std::is_same<decltype(tanh((unsigned int)0)), double>::value), "");
529     static_assert((std::is_same<decltype(tanh((long)0)), double>::value), "");
530     static_assert((std::is_same<decltype(tanh((unsigned long)0)), double>::value), "");
531     static_assert((std::is_same<decltype(tanh((long long)0)), double>::value), "");
532     static_assert((std::is_same<decltype(tanh((unsigned long long)0)), double>::value), "");
533     static_assert((std::is_same<decltype(tanh((double)0)), double>::value), "");
534     static_assert((std::is_same<decltype(tanh((long double)0)), long double>::value), "");
535     static_assert((std::is_same<decltype(tanhf(0)), float>::value), "");
536     static_assert((std::is_same<decltype(tanhl(0)), long double>::value), "");
537     static_assert((std::is_same<decltype(tanh(Ambiguous())), Ambiguous>::value), "");
538     assert(tanh(0) == 0);
539 }
540 
541 void test_signbit()
542 {
543 #ifdef signbit
544 #error signbit defined
545 #endif
546     static_assert((std::is_same<decltype(signbit((float)0)), bool>::value), "");
547     static_assert((std::is_same<decltype(signbit((double)0)), bool>::value), "");
548     static_assert((std::is_same<decltype(signbit(0)), bool>::value), "");
549     static_assert((std::is_same<decltype(signbit((long double)0)), bool>::value), "");
550     static_assert((std::is_same<decltype(signbit(Ambiguous())), Ambiguous>::value), "");
551     assert(signbit(-1.0) == true);
552 }
553 
554 void test_fpclassify()
555 {
556 #ifdef fpclassify
557 #error fpclassify defined
558 #endif
559     static_assert((std::is_same<decltype(fpclassify((float)0)), int>::value), "");
560     static_assert((std::is_same<decltype(fpclassify((double)0)), int>::value), "");
561     static_assert((std::is_same<decltype(fpclassify(0)), int>::value), "");
562     static_assert((std::is_same<decltype(fpclassify((long double)0)), int>::value), "");
563     static_assert((std::is_same<decltype(fpclassify(Ambiguous())), Ambiguous>::value), "");
564     assert(fpclassify(-1.0) == FP_NORMAL);
565 }
566 
567 void test_isfinite()
568 {
569 #ifdef isfinite
570 #error isfinite defined
571 #endif
572     static_assert((std::is_same<decltype(isfinite((float)0)), bool>::value), "");
573     static_assert((std::is_same<decltype(isfinite((double)0)), bool>::value), "");
574     static_assert((std::is_same<decltype(isfinite(0)), bool>::value), "");
575     static_assert((std::is_same<decltype(isfinite((long double)0)), bool>::value), "");
576     static_assert((std::is_same<decltype(isfinite(Ambiguous())), Ambiguous>::value), "");
577     assert(isfinite(-1.0) == true);
578 }
579 
580 void test_isnormal()
581 {
582 #ifdef isnormal
583 #error isnormal defined
584 #endif
585     static_assert((std::is_same<decltype(isnormal((float)0)), bool>::value), "");
586     static_assert((std::is_same<decltype(isnormal((double)0)), bool>::value), "");
587     static_assert((std::is_same<decltype(isnormal(0)), bool>::value), "");
588     static_assert((std::is_same<decltype(isnormal((long double)0)), bool>::value), "");
589     static_assert((std::is_same<decltype(isnormal(Ambiguous())), Ambiguous>::value), "");
590     assert(isnormal(-1.0) == true);
591 }
592 
593 void test_isgreater()
594 {
595 #ifdef isgreater
596 #error isgreater defined
597 #endif
598     static_assert((std::is_same<decltype(isgreater((float)0, (float)0)), bool>::value), "");
599     static_assert((std::is_same<decltype(isgreater((float)0, (double)0)), bool>::value), "");
600     static_assert((std::is_same<decltype(isgreater((float)0, (long double)0)), bool>::value), "");
601     static_assert((std::is_same<decltype(isgreater((double)0, (float)0)), bool>::value), "");
602     static_assert((std::is_same<decltype(isgreater((double)0, (double)0)), bool>::value), "");
603     static_assert((std::is_same<decltype(isgreater(0, (double)0)), bool>::value), "");
604     static_assert((std::is_same<decltype(isgreater((double)0, (long double)0)), bool>::value), "");
605     static_assert((std::is_same<decltype(isgreater((long double)0, (float)0)), bool>::value), "");
606     static_assert((std::is_same<decltype(isgreater((long double)0, (double)0)), bool>::value), "");
607     static_assert((std::is_same<decltype(isgreater((long double)0, (long double)0)), bool>::value), "");
608     static_assert((std::is_same<decltype(isgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
609     assert(isgreater(-1.0, 0.F) == false);
610 }
611 
612 void test_isgreaterequal()
613 {
614 #ifdef isgreaterequal
615 #error isgreaterequal defined
616 #endif
617     static_assert((std::is_same<decltype(isgreaterequal((float)0, (float)0)), bool>::value), "");
618     static_assert((std::is_same<decltype(isgreaterequal((float)0, (double)0)), bool>::value), "");
619     static_assert((std::is_same<decltype(isgreaterequal((float)0, (long double)0)), bool>::value), "");
620     static_assert((std::is_same<decltype(isgreaterequal((double)0, (float)0)), bool>::value), "");
621     static_assert((std::is_same<decltype(isgreaterequal((double)0, (double)0)), bool>::value), "");
622     static_assert((std::is_same<decltype(isgreaterequal(0, (double)0)), bool>::value), "");
623     static_assert((std::is_same<decltype(isgreaterequal((double)0, (long double)0)), bool>::value), "");
624     static_assert((std::is_same<decltype(isgreaterequal((long double)0, (float)0)), bool>::value), "");
625     static_assert((std::is_same<decltype(isgreaterequal((long double)0, (double)0)), bool>::value), "");
626     static_assert((std::is_same<decltype(isgreaterequal((long double)0, (long double)0)), bool>::value), "");
627     static_assert((std::is_same<decltype(isgreaterequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
628     assert(isgreaterequal(-1.0, 0.F) == false);
629 }
630 
631 void test_isinf()
632 {
633 #ifdef isinf
634 #error isinf defined
635 #endif
636     static_assert((std::is_same<decltype(isinf((float)0)), bool>::value), "");
637 
638     typedef decltype(isinf((double)0)) DoubleRetType;
639 #ifndef __linux__
640     static_assert((std::is_same<DoubleRetType, bool>::value), "");
641 #else
642     // GLIBC < 2.26 defines 'isinf(double)' with a return type of 'int' in
643     // all C++ dialects. The test should tolerate this.
644     // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
645     static_assert((std::is_same<DoubleRetType, bool>::value
646                 || std::is_same<DoubleRetType, int>::value), "");
647 #endif
648 
649     static_assert((std::is_same<decltype(isinf(0)), bool>::value), "");
650     static_assert((std::is_same<decltype(isinf((long double)0)), bool>::value), "");
651     assert(isinf(-1.0) == false);
652 }
653 
654 void test_isless()
655 {
656 #ifdef isless
657 #error isless defined
658 #endif
659     static_assert((std::is_same<decltype(isless((float)0, (float)0)), bool>::value), "");
660     static_assert((std::is_same<decltype(isless((float)0, (double)0)), bool>::value), "");
661     static_assert((std::is_same<decltype(isless((float)0, (long double)0)), bool>::value), "");
662     static_assert((std::is_same<decltype(isless((double)0, (float)0)), bool>::value), "");
663     static_assert((std::is_same<decltype(isless((double)0, (double)0)), bool>::value), "");
664     static_assert((std::is_same<decltype(isless(0, (double)0)), bool>::value), "");
665     static_assert((std::is_same<decltype(isless((double)0, (long double)0)), bool>::value), "");
666     static_assert((std::is_same<decltype(isless((long double)0, (float)0)), bool>::value), "");
667     static_assert((std::is_same<decltype(isless((long double)0, (double)0)), bool>::value), "");
668     static_assert((std::is_same<decltype(isless((long double)0, (long double)0)), bool>::value), "");
669     static_assert((std::is_same<decltype(isless(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
670     assert(isless(-1.0, 0.F) == true);
671 }
672 
673 void test_islessequal()
674 {
675 #ifdef islessequal
676 #error islessequal defined
677 #endif
678     static_assert((std::is_same<decltype(islessequal((float)0, (float)0)), bool>::value), "");
679     static_assert((std::is_same<decltype(islessequal((float)0, (double)0)), bool>::value), "");
680     static_assert((std::is_same<decltype(islessequal((float)0, (long double)0)), bool>::value), "");
681     static_assert((std::is_same<decltype(islessequal((double)0, (float)0)), bool>::value), "");
682     static_assert((std::is_same<decltype(islessequal((double)0, (double)0)), bool>::value), "");
683     static_assert((std::is_same<decltype(islessequal(0, (double)0)), bool>::value), "");
684     static_assert((std::is_same<decltype(islessequal((double)0, (long double)0)), bool>::value), "");
685     static_assert((std::is_same<decltype(islessequal((long double)0, (float)0)), bool>::value), "");
686     static_assert((std::is_same<decltype(islessequal((long double)0, (double)0)), bool>::value), "");
687     static_assert((std::is_same<decltype(islessequal((long double)0, (long double)0)), bool>::value), "");
688     static_assert((std::is_same<decltype(islessequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
689     assert(islessequal(-1.0, 0.F) == true);
690 }
691 
692 void test_islessgreater()
693 {
694 #ifdef islessgreater
695 #error islessgreater defined
696 #endif
697     static_assert((std::is_same<decltype(islessgreater((float)0, (float)0)), bool>::value), "");
698     static_assert((std::is_same<decltype(islessgreater((float)0, (double)0)), bool>::value), "");
699     static_assert((std::is_same<decltype(islessgreater((float)0, (long double)0)), bool>::value), "");
700     static_assert((std::is_same<decltype(islessgreater((double)0, (float)0)), bool>::value), "");
701     static_assert((std::is_same<decltype(islessgreater((double)0, (double)0)), bool>::value), "");
702     static_assert((std::is_same<decltype(islessgreater(0, (double)0)), bool>::value), "");
703     static_assert((std::is_same<decltype(islessgreater((double)0, (long double)0)), bool>::value), "");
704     static_assert((std::is_same<decltype(islessgreater((long double)0, (float)0)), bool>::value), "");
705     static_assert((std::is_same<decltype(islessgreater((long double)0, (double)0)), bool>::value), "");
706     static_assert((std::is_same<decltype(islessgreater((long double)0, (long double)0)), bool>::value), "");
707     static_assert((std::is_same<decltype(islessgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
708     assert(islessgreater(-1.0, 0.F) == true);
709 }
710 
711 void test_isnan()
712 {
713 #ifdef isnan
714 #error isnan defined
715 #endif
716     static_assert((std::is_same<decltype(isnan((float)0)), bool>::value), "");
717 
718     typedef decltype(isnan((double)0)) DoubleRetType;
719 #ifndef __linux__
720     static_assert((std::is_same<DoubleRetType, bool>::value), "");
721 #else
722     // GLIBC < 2.26 defines 'isnan(double)' with a return type of 'int' in
723     // all C++ dialects. The test should tolerate this.
724     // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
725     static_assert((std::is_same<DoubleRetType, bool>::value
726                 || std::is_same<DoubleRetType, int>::value), "");
727 #endif
728 
729     static_assert((std::is_same<decltype(isnan(0)), bool>::value), "");
730     static_assert((std::is_same<decltype(isnan((long double)0)), bool>::value), "");
731     assert(isnan(-1.0) == false);
732 }
733 
734 void test_isunordered()
735 {
736 #ifdef isunordered
737 #error isunordered defined
738 #endif
739     static_assert((std::is_same<decltype(isunordered((float)0, (float)0)), bool>::value), "");
740     static_assert((std::is_same<decltype(isunordered((float)0, (double)0)), bool>::value), "");
741     static_assert((std::is_same<decltype(isunordered((float)0, (long double)0)), bool>::value), "");
742     static_assert((std::is_same<decltype(isunordered((double)0, (float)0)), bool>::value), "");
743     static_assert((std::is_same<decltype(isunordered((double)0, (double)0)), bool>::value), "");
744     static_assert((std::is_same<decltype(isunordered(0, (double)0)), bool>::value), "");
745     static_assert((std::is_same<decltype(isunordered((double)0, (long double)0)), bool>::value), "");
746     static_assert((std::is_same<decltype(isunordered((long double)0, (float)0)), bool>::value), "");
747     static_assert((std::is_same<decltype(isunordered((long double)0, (double)0)), bool>::value), "");
748     static_assert((std::is_same<decltype(isunordered((long double)0, (long double)0)), bool>::value), "");
749     static_assert((std::is_same<decltype(isunordered(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
750     assert(isunordered(-1.0, 0.F) == false);
751 }
752 
753 void test_acosh()
754 {
755     static_assert((std::is_same<decltype(acosh((float)0)), float>::value), "");
756     static_assert((std::is_same<decltype(acosh((bool)0)), double>::value), "");
757     static_assert((std::is_same<decltype(acosh((unsigned short)0)), double>::value), "");
758     static_assert((std::is_same<decltype(acosh((int)0)), double>::value), "");
759     static_assert((std::is_same<decltype(acosh((unsigned int)0)), double>::value), "");
760     static_assert((std::is_same<decltype(acosh((long)0)), double>::value), "");
761     static_assert((std::is_same<decltype(acosh((unsigned long)0)), double>::value), "");
762     static_assert((std::is_same<decltype(acosh((long long)0)), double>::value), "");
763     static_assert((std::is_same<decltype(acosh((unsigned long long)0)), double>::value), "");
764     static_assert((std::is_same<decltype(acosh((double)0)), double>::value), "");
765     static_assert((std::is_same<decltype(acosh((long double)0)), long double>::value), "");
766     static_assert((std::is_same<decltype(acoshf(0)), float>::value), "");
767     static_assert((std::is_same<decltype(acoshl(0)), long double>::value), "");
768     static_assert((std::is_same<decltype(acosh(Ambiguous())), Ambiguous>::value), "");
769     assert(acosh(1) == 0);
770 }
771 
772 void test_asinh()
773 {
774     static_assert((std::is_same<decltype(asinh((float)0)), float>::value), "");
775     static_assert((std::is_same<decltype(asinh((bool)0)), double>::value), "");
776     static_assert((std::is_same<decltype(asinh((unsigned short)0)), double>::value), "");
777     static_assert((std::is_same<decltype(asinh((int)0)), double>::value), "");
778     static_assert((std::is_same<decltype(asinh((unsigned int)0)), double>::value), "");
779     static_assert((std::is_same<decltype(asinh((long)0)), double>::value), "");
780     static_assert((std::is_same<decltype(asinh((unsigned long)0)), double>::value), "");
781     static_assert((std::is_same<decltype(asinh((long long)0)), double>::value), "");
782     static_assert((std::is_same<decltype(asinh((unsigned long long)0)), double>::value), "");
783     static_assert((std::is_same<decltype(asinh((double)0)), double>::value), "");
784     static_assert((std::is_same<decltype(asinh((long double)0)), long double>::value), "");
785     static_assert((std::is_same<decltype(asinhf(0)), float>::value), "");
786     static_assert((std::is_same<decltype(asinhl(0)), long double>::value), "");
787     static_assert((std::is_same<decltype(asinh(Ambiguous())), Ambiguous>::value), "");
788     assert(asinh(0) == 0);
789 }
790 
791 void test_atanh()
792 {
793     static_assert((std::is_same<decltype(atanh((float)0)), float>::value), "");
794     static_assert((std::is_same<decltype(atanh((bool)0)), double>::value), "");
795     static_assert((std::is_same<decltype(atanh((unsigned short)0)), double>::value), "");
796     static_assert((std::is_same<decltype(atanh((int)0)), double>::value), "");
797     static_assert((std::is_same<decltype(atanh((unsigned int)0)), double>::value), "");
798     static_assert((std::is_same<decltype(atanh((long)0)), double>::value), "");
799     static_assert((std::is_same<decltype(atanh((unsigned long)0)), double>::value), "");
800     static_assert((std::is_same<decltype(atanh((long long)0)), double>::value), "");
801     static_assert((std::is_same<decltype(atanh((unsigned long long)0)), double>::value), "");
802     static_assert((std::is_same<decltype(atanh((double)0)), double>::value), "");
803     static_assert((std::is_same<decltype(atanh((long double)0)), long double>::value), "");
804     static_assert((std::is_same<decltype(atanhf(0)), float>::value), "");
805     static_assert((std::is_same<decltype(atanhl(0)), long double>::value), "");
806     static_assert((std::is_same<decltype(atanh(Ambiguous())), Ambiguous>::value), "");
807     assert(atanh(0) == 0);
808 }
809 
810 void test_cbrt()
811 {
812     static_assert((std::is_same<decltype(cbrt((float)0)), float>::value), "");
813     static_assert((std::is_same<decltype(cbrt((bool)0)), double>::value), "");
814     static_assert((std::is_same<decltype(cbrt((unsigned short)0)), double>::value), "");
815     static_assert((std::is_same<decltype(cbrt((int)0)), double>::value), "");
816     static_assert((std::is_same<decltype(cbrt((unsigned int)0)), double>::value), "");
817     static_assert((std::is_same<decltype(cbrt((long)0)), double>::value), "");
818     static_assert((std::is_same<decltype(cbrt((unsigned long)0)), double>::value), "");
819     static_assert((std::is_same<decltype(cbrt((long long)0)), double>::value), "");
820     static_assert((std::is_same<decltype(cbrt((unsigned long long)0)), double>::value), "");
821     static_assert((std::is_same<decltype(cbrt((double)0)), double>::value), "");
822     static_assert((std::is_same<decltype(cbrt((long double)0)), long double>::value), "");
823     static_assert((std::is_same<decltype(cbrtf(0)), float>::value), "");
824     static_assert((std::is_same<decltype(cbrtl(0)), long double>::value), "");
825     static_assert((std::is_same<decltype(cbrt(Ambiguous())), Ambiguous>::value), "");
826     assert(cbrt(1) == 1);
827 }
828 
829 void test_copysign()
830 {
831     static_assert((std::is_same<decltype(copysign((float)0, (float)0)), float>::value), "");
832     static_assert((std::is_same<decltype(copysign((bool)0, (float)0)), double>::value), "");
833     static_assert((std::is_same<decltype(copysign((unsigned short)0, (double)0)), double>::value), "");
834     static_assert((std::is_same<decltype(copysign((int)0, (long double)0)), long double>::value), "");
835     static_assert((std::is_same<decltype(copysign((float)0, (unsigned int)0)), double>::value), "");
836     static_assert((std::is_same<decltype(copysign((double)0, (long)0)), double>::value), "");
837     static_assert((std::is_same<decltype(copysign((long double)0, (unsigned long)0)), long double>::value), "");
838     static_assert((std::is_same<decltype(copysign((int)0, (long long)0)), double>::value), "");
839     static_assert((std::is_same<decltype(copysign((int)0, (unsigned long long)0)), double>::value), "");
840     static_assert((std::is_same<decltype(copysign((double)0, (double)0)), double>::value), "");
841     static_assert((std::is_same<decltype(copysign((long double)0, (long double)0)), long double>::value), "");
842     static_assert((std::is_same<decltype(copysign((float)0, (double)0)), double>::value), "");
843     static_assert((std::is_same<decltype(copysign((float)0, (long double)0)), long double>::value), "");
844     static_assert((std::is_same<decltype(copysign((double)0, (long double)0)), long double>::value), "");
845     static_assert((std::is_same<decltype(copysignf(0,0)), float>::value), "");
846     static_assert((std::is_same<decltype(copysignl(0,0)), long double>::value), "");
847     static_assert((std::is_same<decltype(copysign((int)0, (int)0)), double>::value), "");
848     static_assert((std::is_same<decltype(copysign(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
849     assert(copysign(1,1) == 1);
850 }
851 
852 void test_erf()
853 {
854     static_assert((std::is_same<decltype(erf((float)0)), float>::value), "");
855     static_assert((std::is_same<decltype(erf((bool)0)), double>::value), "");
856     static_assert((std::is_same<decltype(erf((unsigned short)0)), double>::value), "");
857     static_assert((std::is_same<decltype(erf((int)0)), double>::value), "");
858     static_assert((std::is_same<decltype(erf((unsigned int)0)), double>::value), "");
859     static_assert((std::is_same<decltype(erf((long)0)), double>::value), "");
860     static_assert((std::is_same<decltype(erf((unsigned long)0)), double>::value), "");
861     static_assert((std::is_same<decltype(erf((long long)0)), double>::value), "");
862     static_assert((std::is_same<decltype(erf((unsigned long long)0)), double>::value), "");
863     static_assert((std::is_same<decltype(erf((double)0)), double>::value), "");
864     static_assert((std::is_same<decltype(erf((long double)0)), long double>::value), "");
865     static_assert((std::is_same<decltype(erff(0)), float>::value), "");
866     static_assert((std::is_same<decltype(erfl(0)), long double>::value), "");
867     static_assert((std::is_same<decltype(erf(Ambiguous())), Ambiguous>::value), "");
868     assert(erf(0) == 0);
869 }
870 
871 void test_erfc()
872 {
873     static_assert((std::is_same<decltype(erfc((float)0)), float>::value), "");
874     static_assert((std::is_same<decltype(erfc((bool)0)), double>::value), "");
875     static_assert((std::is_same<decltype(erfc((unsigned short)0)), double>::value), "");
876     static_assert((std::is_same<decltype(erfc((int)0)), double>::value), "");
877     static_assert((std::is_same<decltype(erfc((unsigned int)0)), double>::value), "");
878     static_assert((std::is_same<decltype(erfc((long)0)), double>::value), "");
879     static_assert((std::is_same<decltype(erfc((unsigned long)0)), double>::value), "");
880     static_assert((std::is_same<decltype(erfc((long long)0)), double>::value), "");
881     static_assert((std::is_same<decltype(erfc((unsigned long long)0)), double>::value), "");
882     static_assert((std::is_same<decltype(erfc((double)0)), double>::value), "");
883     static_assert((std::is_same<decltype(erfc((long double)0)), long double>::value), "");
884     static_assert((std::is_same<decltype(erfcf(0)), float>::value), "");
885     static_assert((std::is_same<decltype(erfcl(0)), long double>::value), "");
886     static_assert((std::is_same<decltype(erfc(Ambiguous())), Ambiguous>::value), "");
887     assert(erfc(0) == 1);
888 }
889 
890 void test_exp2()
891 {
892     static_assert((std::is_same<decltype(exp2((float)0)), float>::value), "");
893     static_assert((std::is_same<decltype(exp2((bool)0)), double>::value), "");
894     static_assert((std::is_same<decltype(exp2((unsigned short)0)), double>::value), "");
895     static_assert((std::is_same<decltype(exp2((int)0)), double>::value), "");
896     static_assert((std::is_same<decltype(exp2((unsigned int)0)), double>::value), "");
897     static_assert((std::is_same<decltype(exp2((long)0)), double>::value), "");
898     static_assert((std::is_same<decltype(exp2((unsigned long)0)), double>::value), "");
899     static_assert((std::is_same<decltype(exp2((long long)0)), double>::value), "");
900     static_assert((std::is_same<decltype(exp2((unsigned long long)0)), double>::value), "");
901     static_assert((std::is_same<decltype(exp2((double)0)), double>::value), "");
902     static_assert((std::is_same<decltype(exp2((long double)0)), long double>::value), "");
903     static_assert((std::is_same<decltype(exp2f(0)), float>::value), "");
904     static_assert((std::is_same<decltype(exp2l(0)), long double>::value), "");
905     static_assert((std::is_same<decltype(exp2(Ambiguous())), Ambiguous>::value), "");
906     assert(exp2(1) == 2);
907 }
908 
909 void test_expm1()
910 {
911     static_assert((std::is_same<decltype(expm1((float)0)), float>::value), "");
912     static_assert((std::is_same<decltype(expm1((bool)0)), double>::value), "");
913     static_assert((std::is_same<decltype(expm1((unsigned short)0)), double>::value), "");
914     static_assert((std::is_same<decltype(expm1((int)0)), double>::value), "");
915     static_assert((std::is_same<decltype(expm1((unsigned int)0)), double>::value), "");
916     static_assert((std::is_same<decltype(expm1((long)0)), double>::value), "");
917     static_assert((std::is_same<decltype(expm1((unsigned long)0)), double>::value), "");
918     static_assert((std::is_same<decltype(expm1((long long)0)), double>::value), "");
919     static_assert((std::is_same<decltype(expm1((unsigned long long)0)), double>::value), "");
920     static_assert((std::is_same<decltype(expm1((double)0)), double>::value), "");
921     static_assert((std::is_same<decltype(expm1((long double)0)), long double>::value), "");
922     static_assert((std::is_same<decltype(expm1f(0)), float>::value), "");
923     static_assert((std::is_same<decltype(expm1l(0)), long double>::value), "");
924     static_assert((std::is_same<decltype(expm1(Ambiguous())), Ambiguous>::value), "");
925     assert(expm1(0) == 0);
926 }
927 
928 void test_fdim()
929 {
930     static_assert((std::is_same<decltype(fdim((float)0, (float)0)), float>::value), "");
931     static_assert((std::is_same<decltype(fdim((bool)0, (float)0)), double>::value), "");
932     static_assert((std::is_same<decltype(fdim((unsigned short)0, (double)0)), double>::value), "");
933     static_assert((std::is_same<decltype(fdim((int)0, (long double)0)), long double>::value), "");
934     static_assert((std::is_same<decltype(fdim((float)0, (unsigned int)0)), double>::value), "");
935     static_assert((std::is_same<decltype(fdim((double)0, (long)0)), double>::value), "");
936     static_assert((std::is_same<decltype(fdim((long double)0, (unsigned long)0)), long double>::value), "");
937     static_assert((std::is_same<decltype(fdim((int)0, (long long)0)), double>::value), "");
938     static_assert((std::is_same<decltype(fdim((int)0, (unsigned long long)0)), double>::value), "");
939     static_assert((std::is_same<decltype(fdim((double)0, (double)0)), double>::value), "");
940     static_assert((std::is_same<decltype(fdim((long double)0, (long double)0)), long double>::value), "");
941     static_assert((std::is_same<decltype(fdim((float)0, (double)0)), double>::value), "");
942     static_assert((std::is_same<decltype(fdim((float)0, (long double)0)), long double>::value), "");
943     static_assert((std::is_same<decltype(fdim((double)0, (long double)0)), long double>::value), "");
944     static_assert((std::is_same<decltype(fdimf(0,0)), float>::value), "");
945     static_assert((std::is_same<decltype(fdiml(0,0)), long double>::value), "");
946     static_assert((std::is_same<decltype(fdim((int)0, (int)0)), double>::value), "");
947     static_assert((std::is_same<decltype(fdim(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
948     assert(fdim(1,0) == 1);
949 }
950 
951 void test_fma()
952 {
953     static_assert((std::is_same<decltype(fma((bool)0, (float)0, (float)0)), double>::value), "");
954     static_assert((std::is_same<decltype(fma((char)0, (float)0, (float)0)), double>::value), "");
955     static_assert((std::is_same<decltype(fma((unsigned)0, (float)0, (float)0)), double>::value), "");
956     static_assert((std::is_same<decltype(fma((float)0, (int)0, (float)0)), double>::value), "");
957     static_assert((std::is_same<decltype(fma((float)0, (long)0, (float)0)), double>::value), "");
958     static_assert((std::is_same<decltype(fma((float)0, (float)0, (unsigned long long)0)), double>::value), "");
959     static_assert((std::is_same<decltype(fma((float)0, (float)0, (double)0)), double>::value), "");
960     static_assert((std::is_same<decltype(fma((float)0, (float)0, (long double)0)), long double>::value), "");
961     static_assert((std::is_same<decltype(fma((float)0, (float)0, (float)0)), float>::value), "");
962 
963     static_assert((std::is_same<decltype(fma((bool)0, (double)0, (double)0)), double>::value), "");
964     static_assert((std::is_same<decltype(fma((char)0, (double)0, (double)0)), double>::value), "");
965     static_assert((std::is_same<decltype(fma((unsigned)0, (double)0, (double)0)), double>::value), "");
966     static_assert((std::is_same<decltype(fma((double)0, (int)0, (double)0)), double>::value), "");
967     static_assert((std::is_same<decltype(fma((double)0, (long)0, (double)0)), double>::value), "");
968     static_assert((std::is_same<decltype(fma((double)0, (double)0, (unsigned long long)0)), double>::value), "");
969     static_assert((std::is_same<decltype(fma((double)0, (double)0, (float)0)), double>::value), "");
970     static_assert((std::is_same<decltype(fma((double)0, (double)0, (long double)0)), long double>::value), "");
971     static_assert((std::is_same<decltype(fma((double)0, (double)0,  (double)0)), double>::value), "");
972 
973     static_assert((std::is_same<decltype(fma((bool)0, (long double)0, (long double)0)), long double>::value), "");
974     static_assert((std::is_same<decltype(fma((char)0, (long double)0, (long double)0)), long double>::value), "");
975     static_assert((std::is_same<decltype(fma((unsigned)0, (long double)0, (long double)0)), long double>::value), "");
976     static_assert((std::is_same<decltype(fma((long double)0, (int)0, (long double)0)), long double>::value), "");
977     static_assert((std::is_same<decltype(fma((long double)0, (long)0, (long double)0)), long double>::value), "");
978     static_assert((std::is_same<decltype(fma((long double)0, (long double)0, (unsigned long long)0)), long double>::value), "");
979     static_assert((std::is_same<decltype(fma((long double)0, (long double)0, (float)0)), long double>::value), "");
980     static_assert((std::is_same<decltype(fma((double)0, (long double)0, (long double)0)), long double>::value), "");
981     static_assert((std::is_same<decltype(fma((long double)0, (long double)0, (long double)0)), long double>::value), "");
982 
983     static_assert((std::is_same<decltype(fmaf(0,0,0)), float>::value), "");
984     static_assert((std::is_same<decltype(fmal(0,0,0)), long double>::value), "");
985     static_assert((std::is_same<decltype(fma(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
986     assert(fma(1,1,1) == 2);
987 }
988 
989 void test_fmax()
990 {
991     static_assert((std::is_same<decltype(fmax((float)0, (float)0)), float>::value), "");
992     static_assert((std::is_same<decltype(fmax((bool)0, (float)0)), double>::value), "");
993     static_assert((std::is_same<decltype(fmax((unsigned short)0, (double)0)), double>::value), "");
994     static_assert((std::is_same<decltype(fmax((int)0, (long double)0)), long double>::value), "");
995     static_assert((std::is_same<decltype(fmax((float)0, (unsigned int)0)), double>::value), "");
996     static_assert((std::is_same<decltype(fmax((double)0, (long)0)), double>::value), "");
997     static_assert((std::is_same<decltype(fmax((long double)0, (unsigned long)0)), long double>::value), "");
998     static_assert((std::is_same<decltype(fmax((int)0, (long long)0)), double>::value), "");
999     static_assert((std::is_same<decltype(fmax((int)0, (unsigned long long)0)), double>::value), "");
1000     static_assert((std::is_same<decltype(fmax((double)0, (double)0)), double>::value), "");
1001     static_assert((std::is_same<decltype(fmax((long double)0, (long double)0)), long double>::value), "");
1002     static_assert((std::is_same<decltype(fmax((float)0, (double)0)), double>::value), "");
1003     static_assert((std::is_same<decltype(fmax((float)0, (long double)0)), long double>::value), "");
1004     static_assert((std::is_same<decltype(fmax((double)0, (long double)0)), long double>::value), "");
1005     static_assert((std::is_same<decltype(fmaxf(0,0)), float>::value), "");
1006     static_assert((std::is_same<decltype(fmaxl(0,0)), long double>::value), "");
1007     static_assert((std::is_same<decltype(fmax((int)0, (int)0)), double>::value), "");
1008     static_assert((std::is_same<decltype(fmax(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1009     assert(fmax(1,0) == 1);
1010 }
1011 
1012 void test_fmin()
1013 {
1014     static_assert((std::is_same<decltype(fmin((float)0, (float)0)), float>::value), "");
1015     static_assert((std::is_same<decltype(fmin((bool)0, (float)0)), double>::value), "");
1016     static_assert((std::is_same<decltype(fmin((unsigned short)0, (double)0)), double>::value), "");
1017     static_assert((std::is_same<decltype(fmin((int)0, (long double)0)), long double>::value), "");
1018     static_assert((std::is_same<decltype(fmin((float)0, (unsigned int)0)), double>::value), "");
1019     static_assert((std::is_same<decltype(fmin((double)0, (long)0)), double>::value), "");
1020     static_assert((std::is_same<decltype(fmin((long double)0, (unsigned long)0)), long double>::value), "");
1021     static_assert((std::is_same<decltype(fmin((int)0, (long long)0)), double>::value), "");
1022     static_assert((std::is_same<decltype(fmin((int)0, (unsigned long long)0)), double>::value), "");
1023     static_assert((std::is_same<decltype(fmin((double)0, (double)0)), double>::value), "");
1024     static_assert((std::is_same<decltype(fmin((long double)0, (long double)0)), long double>::value), "");
1025     static_assert((std::is_same<decltype(fmin((float)0, (double)0)), double>::value), "");
1026     static_assert((std::is_same<decltype(fmin((float)0, (long double)0)), long double>::value), "");
1027     static_assert((std::is_same<decltype(fmin((double)0, (long double)0)), long double>::value), "");
1028     static_assert((std::is_same<decltype(fminf(0,0)), float>::value), "");
1029     static_assert((std::is_same<decltype(fminl(0,0)), long double>::value), "");
1030     static_assert((std::is_same<decltype(fmin((int)0, (int)0)), double>::value), "");
1031     static_assert((std::is_same<decltype(fmin(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1032     assert(fmin(1,0) == 0);
1033 }
1034 
1035 void test_hypot()
1036 {
1037     static_assert((std::is_same<decltype(hypot((float)0, (float)0)), float>::value), "");
1038     static_assert((std::is_same<decltype(hypot((bool)0, (float)0)), double>::value), "");
1039     static_assert((std::is_same<decltype(hypot((unsigned short)0, (double)0)), double>::value), "");
1040     static_assert((std::is_same<decltype(hypot((int)0, (long double)0)), long double>::value), "");
1041     static_assert((std::is_same<decltype(hypot((float)0, (unsigned int)0)), double>::value), "");
1042     static_assert((std::is_same<decltype(hypot((double)0, (long)0)), double>::value), "");
1043     static_assert((std::is_same<decltype(hypot((long double)0, (unsigned long)0)), long double>::value), "");
1044     static_assert((std::is_same<decltype(hypot((int)0, (long long)0)), double>::value), "");
1045     static_assert((std::is_same<decltype(hypot((int)0, (unsigned long long)0)), double>::value), "");
1046     static_assert((std::is_same<decltype(hypot((double)0, (double)0)), double>::value), "");
1047     static_assert((std::is_same<decltype(hypot((long double)0, (long double)0)), long double>::value), "");
1048     static_assert((std::is_same<decltype(hypot((float)0, (double)0)), double>::value), "");
1049     static_assert((std::is_same<decltype(hypot((float)0, (long double)0)), long double>::value), "");
1050     static_assert((std::is_same<decltype(hypot((double)0, (long double)0)), long double>::value), "");
1051     static_assert((std::is_same<decltype(hypotf(0,0)), float>::value), "");
1052     static_assert((std::is_same<decltype(hypotl(0,0)), long double>::value), "");
1053     static_assert((std::is_same<decltype(hypot((int)0, (int)0)), double>::value), "");
1054     static_assert((std::is_same<decltype(hypot(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1055     assert(hypot(3,4) == 5);
1056 }
1057 
1058 void test_ilogb()
1059 {
1060     static_assert((std::is_same<decltype(ilogb((float)0)), int>::value), "");
1061     static_assert((std::is_same<decltype(ilogb((bool)0)), int>::value), "");
1062     static_assert((std::is_same<decltype(ilogb((unsigned short)0)), int>::value), "");
1063     static_assert((std::is_same<decltype(ilogb((int)0)), int>::value), "");
1064     static_assert((std::is_same<decltype(ilogb((unsigned int)0)), int>::value), "");
1065     static_assert((std::is_same<decltype(ilogb((long)0)), int>::value), "");
1066     static_assert((std::is_same<decltype(ilogb((unsigned long)0)), int>::value), "");
1067     static_assert((std::is_same<decltype(ilogb((long long)0)), int>::value), "");
1068     static_assert((std::is_same<decltype(ilogb((unsigned long long)0)), int>::value), "");
1069     static_assert((std::is_same<decltype(ilogb((double)0)), int>::value), "");
1070     static_assert((std::is_same<decltype(ilogb((long double)0)), int>::value), "");
1071     static_assert((std::is_same<decltype(ilogbf(0)), int>::value), "");
1072     static_assert((std::is_same<decltype(ilogbl(0)), int>::value), "");
1073     static_assert((std::is_same<decltype(ilogb(Ambiguous())), Ambiguous>::value), "");
1074     assert(ilogb(1) == 0);
1075 }
1076 
1077 void test_lgamma()
1078 {
1079     static_assert((std::is_same<decltype(lgamma((float)0)), float>::value), "");
1080     static_assert((std::is_same<decltype(lgamma((bool)0)), double>::value), "");
1081     static_assert((std::is_same<decltype(lgamma((unsigned short)0)), double>::value), "");
1082     static_assert((std::is_same<decltype(lgamma((int)0)), double>::value), "");
1083     static_assert((std::is_same<decltype(lgamma((unsigned int)0)), double>::value), "");
1084     static_assert((std::is_same<decltype(lgamma((long)0)), double>::value), "");
1085     static_assert((std::is_same<decltype(lgamma((unsigned long)0)), double>::value), "");
1086     static_assert((std::is_same<decltype(lgamma((long long)0)), double>::value), "");
1087     static_assert((std::is_same<decltype(lgamma((unsigned long long)0)), double>::value), "");
1088     static_assert((std::is_same<decltype(lgamma((double)0)), double>::value), "");
1089     static_assert((std::is_same<decltype(lgamma((long double)0)), long double>::value), "");
1090     static_assert((std::is_same<decltype(lgammaf(0)), float>::value), "");
1091     static_assert((std::is_same<decltype(lgammal(0)), long double>::value), "");
1092     static_assert((std::is_same<decltype(lgamma(Ambiguous())), Ambiguous>::value), "");
1093     assert(lgamma(1) == 0);
1094 }
1095 
1096 void test_llrint()
1097 {
1098     static_assert((std::is_same<decltype(llrint((float)0)), long long>::value), "");
1099     static_assert((std::is_same<decltype(llrint((bool)0)), long long>::value), "");
1100     static_assert((std::is_same<decltype(llrint((unsigned short)0)), long long>::value), "");
1101     static_assert((std::is_same<decltype(llrint((int)0)), long long>::value), "");
1102     static_assert((std::is_same<decltype(llrint((unsigned int)0)), long long>::value), "");
1103     static_assert((std::is_same<decltype(llrint((long)0)), long long>::value), "");
1104     static_assert((std::is_same<decltype(llrint((unsigned long)0)), long long>::value), "");
1105     static_assert((std::is_same<decltype(llrint((long long)0)), long long>::value), "");
1106     static_assert((std::is_same<decltype(llrint((unsigned long long)0)), long long>::value), "");
1107     static_assert((std::is_same<decltype(llrint((double)0)), long long>::value), "");
1108     static_assert((std::is_same<decltype(llrint((long double)0)), long long>::value), "");
1109     static_assert((std::is_same<decltype(llrintf(0)), long long>::value), "");
1110     static_assert((std::is_same<decltype(llrintl(0)), long long>::value), "");
1111     static_assert((std::is_same<decltype(llrint(Ambiguous())), Ambiguous>::value), "");
1112     assert(llrint(1) == 1LL);
1113 }
1114 
1115 void test_llround()
1116 {
1117     static_assert((std::is_same<decltype(llround((float)0)), long long>::value), "");
1118     static_assert((std::is_same<decltype(llround((bool)0)), long long>::value), "");
1119     static_assert((std::is_same<decltype(llround((unsigned short)0)), long long>::value), "");
1120     static_assert((std::is_same<decltype(llround((int)0)), long long>::value), "");
1121     static_assert((std::is_same<decltype(llround((unsigned int)0)), long long>::value), "");
1122     static_assert((std::is_same<decltype(llround((long)0)), long long>::value), "");
1123     static_assert((std::is_same<decltype(llround((unsigned long)0)), long long>::value), "");
1124     static_assert((std::is_same<decltype(llround((long long)0)), long long>::value), "");
1125     static_assert((std::is_same<decltype(llround((unsigned long long)0)), long long>::value), "");
1126     static_assert((std::is_same<decltype(llround((double)0)), long long>::value), "");
1127     static_assert((std::is_same<decltype(llround((long double)0)), long long>::value), "");
1128     static_assert((std::is_same<decltype(llroundf(0)), long long>::value), "");
1129     static_assert((std::is_same<decltype(llroundl(0)), long long>::value), "");
1130     static_assert((std::is_same<decltype(llround(Ambiguous())), Ambiguous>::value), "");
1131     assert(llround(1) == 1LL);
1132 }
1133 
1134 void test_log1p()
1135 {
1136     static_assert((std::is_same<decltype(log1p((float)0)), float>::value), "");
1137     static_assert((std::is_same<decltype(log1p((bool)0)), double>::value), "");
1138     static_assert((std::is_same<decltype(log1p((unsigned short)0)), double>::value), "");
1139     static_assert((std::is_same<decltype(log1p((int)0)), double>::value), "");
1140     static_assert((std::is_same<decltype(log1p((unsigned int)0)), double>::value), "");
1141     static_assert((std::is_same<decltype(log1p((long)0)), double>::value), "");
1142     static_assert((std::is_same<decltype(log1p((unsigned long)0)), double>::value), "");
1143     static_assert((std::is_same<decltype(log1p((long long)0)), double>::value), "");
1144     static_assert((std::is_same<decltype(log1p((unsigned long long)0)), double>::value), "");
1145     static_assert((std::is_same<decltype(log1p((double)0)), double>::value), "");
1146     static_assert((std::is_same<decltype(log1p((long double)0)), long double>::value), "");
1147     static_assert((std::is_same<decltype(log1pf(0)), float>::value), "");
1148     static_assert((std::is_same<decltype(log1pl(0)), long double>::value), "");
1149     static_assert((std::is_same<decltype(log1p(Ambiguous())), Ambiguous>::value), "");
1150     assert(log1p(0) == 0);
1151 }
1152 
1153 void test_log2()
1154 {
1155     static_assert((std::is_same<decltype(log2((float)0)), float>::value), "");
1156     static_assert((std::is_same<decltype(log2((bool)0)), double>::value), "");
1157     static_assert((std::is_same<decltype(log2((unsigned short)0)), double>::value), "");
1158     static_assert((std::is_same<decltype(log2((int)0)), double>::value), "");
1159     static_assert((std::is_same<decltype(log2((unsigned int)0)), double>::value), "");
1160     static_assert((std::is_same<decltype(log2((long)0)), double>::value), "");
1161     static_assert((std::is_same<decltype(log2((unsigned long)0)), double>::value), "");
1162     static_assert((std::is_same<decltype(log2((long long)0)), double>::value), "");
1163     static_assert((std::is_same<decltype(log2((unsigned long long)0)), double>::value), "");
1164     static_assert((std::is_same<decltype(log2((double)0)), double>::value), "");
1165     static_assert((std::is_same<decltype(log2((long double)0)), long double>::value), "");
1166     static_assert((std::is_same<decltype(log2f(0)), float>::value), "");
1167     static_assert((std::is_same<decltype(log2l(0)), long double>::value), "");
1168     static_assert((std::is_same<decltype(log2(Ambiguous())), Ambiguous>::value), "");
1169     assert(log2(1) == 0);
1170 }
1171 
1172 void test_logb()
1173 {
1174     static_assert((std::is_same<decltype(logb((float)0)), float>::value), "");
1175     static_assert((std::is_same<decltype(logb((bool)0)), double>::value), "");
1176     static_assert((std::is_same<decltype(logb((unsigned short)0)), double>::value), "");
1177     static_assert((std::is_same<decltype(logb((int)0)), double>::value), "");
1178     static_assert((std::is_same<decltype(logb((unsigned int)0)), double>::value), "");
1179     static_assert((std::is_same<decltype(logb((long)0)), double>::value), "");
1180     static_assert((std::is_same<decltype(logb((unsigned long)0)), double>::value), "");
1181     static_assert((std::is_same<decltype(logb((long long)0)), double>::value), "");
1182     static_assert((std::is_same<decltype(logb((unsigned long long)0)), double>::value), "");
1183     static_assert((std::is_same<decltype(logb((double)0)), double>::value), "");
1184     static_assert((std::is_same<decltype(logb((long double)0)), long double>::value), "");
1185     static_assert((std::is_same<decltype(logbf(0)), float>::value), "");
1186     static_assert((std::is_same<decltype(logbl(0)), long double>::value), "");
1187     static_assert((std::is_same<decltype(logb(Ambiguous())), Ambiguous>::value), "");
1188     assert(logb(1) == 0);
1189 }
1190 
1191 void test_lrint()
1192 {
1193     static_assert((std::is_same<decltype(lrint((float)0)), long>::value), "");
1194     static_assert((std::is_same<decltype(lrint((bool)0)), long>::value), "");
1195     static_assert((std::is_same<decltype(lrint((unsigned short)0)), long>::value), "");
1196     static_assert((std::is_same<decltype(lrint((int)0)), long>::value), "");
1197     static_assert((std::is_same<decltype(lrint((unsigned int)0)), long>::value), "");
1198     static_assert((std::is_same<decltype(lrint((long)0)), long>::value), "");
1199     static_assert((std::is_same<decltype(lrint((unsigned long)0)), long>::value), "");
1200     static_assert((std::is_same<decltype(lrint((long long)0)), long>::value), "");
1201     static_assert((std::is_same<decltype(lrint((unsigned long long)0)), long>::value), "");
1202     static_assert((std::is_same<decltype(lrint((double)0)), long>::value), "");
1203     static_assert((std::is_same<decltype(lrint((long double)0)), long>::value), "");
1204     static_assert((std::is_same<decltype(lrintf(0)), long>::value), "");
1205     static_assert((std::is_same<decltype(lrintl(0)), long>::value), "");
1206     static_assert((std::is_same<decltype(lrint(Ambiguous())), Ambiguous>::value), "");
1207     assert(lrint(1) == 1L);
1208 }
1209 
1210 void test_lround()
1211 {
1212     static_assert((std::is_same<decltype(lround((float)0)), long>::value), "");
1213     static_assert((std::is_same<decltype(lround((bool)0)), long>::value), "");
1214     static_assert((std::is_same<decltype(lround((unsigned short)0)), long>::value), "");
1215     static_assert((std::is_same<decltype(lround((int)0)), long>::value), "");
1216     static_assert((std::is_same<decltype(lround((unsigned int)0)), long>::value), "");
1217     static_assert((std::is_same<decltype(lround((long)0)), long>::value), "");
1218     static_assert((std::is_same<decltype(lround((unsigned long)0)), long>::value), "");
1219     static_assert((std::is_same<decltype(lround((long long)0)), long>::value), "");
1220     static_assert((std::is_same<decltype(lround((unsigned long long)0)), long>::value), "");
1221     static_assert((std::is_same<decltype(lround((double)0)), long>::value), "");
1222     static_assert((std::is_same<decltype(lround((long double)0)), long>::value), "");
1223     static_assert((std::is_same<decltype(lroundf(0)), long>::value), "");
1224     static_assert((std::is_same<decltype(lroundl(0)), long>::value), "");
1225     static_assert((std::is_same<decltype(lround(Ambiguous())), Ambiguous>::value), "");
1226     assert(lround(1) == 1L);
1227 }
1228 
1229 void test_nan()
1230 {
1231     static_assert((std::is_same<decltype(nan("")), double>::value), "");
1232     static_assert((std::is_same<decltype(nanf("")), float>::value), "");
1233     static_assert((std::is_same<decltype(nanl("")), long double>::value), "");
1234 }
1235 
1236 void test_nearbyint()
1237 {
1238     static_assert((std::is_same<decltype(nearbyint((float)0)), float>::value), "");
1239     static_assert((std::is_same<decltype(nearbyint((bool)0)), double>::value), "");
1240     static_assert((std::is_same<decltype(nearbyint((unsigned short)0)), double>::value), "");
1241     static_assert((std::is_same<decltype(nearbyint((int)0)), double>::value), "");
1242     static_assert((std::is_same<decltype(nearbyint((unsigned int)0)), double>::value), "");
1243     static_assert((std::is_same<decltype(nearbyint((long)0)), double>::value), "");
1244     static_assert((std::is_same<decltype(nearbyint((unsigned long)0)), double>::value), "");
1245     static_assert((std::is_same<decltype(nearbyint((long long)0)), double>::value), "");
1246     static_assert((std::is_same<decltype(nearbyint((unsigned long long)0)), double>::value), "");
1247     static_assert((std::is_same<decltype(nearbyint((double)0)), double>::value), "");
1248     static_assert((std::is_same<decltype(nearbyint((long double)0)), long double>::value), "");
1249     static_assert((std::is_same<decltype(nearbyintf(0)), float>::value), "");
1250     static_assert((std::is_same<decltype(nearbyintl(0)), long double>::value), "");
1251     static_assert((std::is_same<decltype(nearbyint(Ambiguous())), Ambiguous>::value), "");
1252     assert(nearbyint(1) == 1);
1253 }
1254 
1255 void test_nextafter()
1256 {
1257     static_assert((std::is_same<decltype(nextafter((float)0, (float)0)), float>::value), "");
1258     static_assert((std::is_same<decltype(nextafter((bool)0, (float)0)), double>::value), "");
1259     static_assert((std::is_same<decltype(nextafter((unsigned short)0, (double)0)), double>::value), "");
1260     static_assert((std::is_same<decltype(nextafter((int)0, (long double)0)), long double>::value), "");
1261     static_assert((std::is_same<decltype(nextafter((float)0, (unsigned int)0)), double>::value), "");
1262     static_assert((std::is_same<decltype(nextafter((double)0, (long)0)), double>::value), "");
1263     static_assert((std::is_same<decltype(nextafter((long double)0, (unsigned long)0)), long double>::value), "");
1264     static_assert((std::is_same<decltype(nextafter((int)0, (long long)0)), double>::value), "");
1265     static_assert((std::is_same<decltype(nextafter((int)0, (unsigned long long)0)), double>::value), "");
1266     static_assert((std::is_same<decltype(nextafter((double)0, (double)0)), double>::value), "");
1267     static_assert((std::is_same<decltype(nextafter((long double)0, (long double)0)), long double>::value), "");
1268     static_assert((std::is_same<decltype(nextafter((float)0, (double)0)), double>::value), "");
1269     static_assert((std::is_same<decltype(nextafter((float)0, (long double)0)), long double>::value), "");
1270     static_assert((std::is_same<decltype(nextafter((double)0, (long double)0)), long double>::value), "");
1271     static_assert((std::is_same<decltype(nextafterf(0,0)), float>::value), "");
1272     static_assert((std::is_same<decltype(nextafterl(0,0)), long double>::value), "");
1273     static_assert((std::is_same<decltype(nextafter((int)0, (int)0)), double>::value), "");
1274     static_assert((std::is_same<decltype(nextafter(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1275     assert(nextafter(0,1) == hexfloat<double>(0x1, 0, -1074));
1276 }
1277 
1278 void test_nexttoward()
1279 {
1280     static_assert((std::is_same<decltype(nexttoward((float)0, (long double)0)), float>::value), "");
1281     static_assert((std::is_same<decltype(nexttoward((bool)0, (long double)0)), double>::value), "");
1282     static_assert((std::is_same<decltype(nexttoward((unsigned short)0, (long double)0)), double>::value), "");
1283     static_assert((std::is_same<decltype(nexttoward((int)0, (long double)0)), double>::value), "");
1284     static_assert((std::is_same<decltype(nexttoward((unsigned int)0, (long double)0)), double>::value), "");
1285     static_assert((std::is_same<decltype(nexttoward((long)0, (long double)0)), double>::value), "");
1286     static_assert((std::is_same<decltype(nexttoward((unsigned long)0, (long double)0)), double>::value), "");
1287     static_assert((std::is_same<decltype(nexttoward((long long)0, (long double)0)), double>::value), "");
1288     static_assert((std::is_same<decltype(nexttoward((unsigned long long)0, (long double)0)), double>::value), "");
1289     static_assert((std::is_same<decltype(nexttoward((double)0, (long double)0)), double>::value), "");
1290     static_assert((std::is_same<decltype(nexttoward((long double)0, (long double)0)), long double>::value), "");
1291     static_assert((std::is_same<decltype(nexttowardf(0, (long double)0)), float>::value), "");
1292     static_assert((std::is_same<decltype(nexttowardl(0, (long double)0)), long double>::value), "");
1293     static_assert((std::is_same<decltype(nexttoward(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1294     assert(nexttoward(0, 1) == hexfloat<double>(0x1, 0, -1074));
1295 }
1296 
1297 void test_remainder()
1298 {
1299     static_assert((std::is_same<decltype(remainder((float)0, (float)0)), float>::value), "");
1300     static_assert((std::is_same<decltype(remainder((bool)0, (float)0)), double>::value), "");
1301     static_assert((std::is_same<decltype(remainder((unsigned short)0, (double)0)), double>::value), "");
1302     static_assert((std::is_same<decltype(remainder((int)0, (long double)0)), long double>::value), "");
1303     static_assert((std::is_same<decltype(remainder((float)0, (unsigned int)0)), double>::value), "");
1304     static_assert((std::is_same<decltype(remainder((double)0, (long)0)), double>::value), "");
1305     static_assert((std::is_same<decltype(remainder((long double)0, (unsigned long)0)), long double>::value), "");
1306     static_assert((std::is_same<decltype(remainder((int)0, (long long)0)), double>::value), "");
1307     static_assert((std::is_same<decltype(remainder((int)0, (unsigned long long)0)), double>::value), "");
1308     static_assert((std::is_same<decltype(remainder((double)0, (double)0)), double>::value), "");
1309     static_assert((std::is_same<decltype(remainder((long double)0, (long double)0)), long double>::value), "");
1310     static_assert((std::is_same<decltype(remainder((float)0, (double)0)), double>::value), "");
1311     static_assert((std::is_same<decltype(remainder((float)0, (long double)0)), long double>::value), "");
1312     static_assert((std::is_same<decltype(remainder((double)0, (long double)0)), long double>::value), "");
1313     static_assert((std::is_same<decltype(remainderf(0,0)), float>::value), "");
1314     static_assert((std::is_same<decltype(remainderl(0,0)), long double>::value), "");
1315     static_assert((std::is_same<decltype(remainder((int)0, (int)0)), double>::value), "");
1316     static_assert((std::is_same<decltype(remainder(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1317     assert(remainder(0.5,1) == 0.5);
1318 }
1319 
1320 void test_remquo()
1321 {
1322     int ip;
1323     static_assert((std::is_same<decltype(remquo((float)0, (float)0, &ip)), float>::value), "");
1324     static_assert((std::is_same<decltype(remquo((bool)0, (float)0, &ip)), double>::value), "");
1325     static_assert((std::is_same<decltype(remquo((unsigned short)0, (double)0, &ip)), double>::value), "");
1326     static_assert((std::is_same<decltype(remquo((int)0, (long double)0, &ip)), long double>::value), "");
1327     static_assert((std::is_same<decltype(remquo((float)0, (unsigned int)0, &ip)), double>::value), "");
1328     static_assert((std::is_same<decltype(remquo((double)0, (long)0, &ip)), double>::value), "");
1329     static_assert((std::is_same<decltype(remquo((long double)0, (unsigned long)0, &ip)), long double>::value), "");
1330     static_assert((std::is_same<decltype(remquo((int)0, (long long)0, &ip)), double>::value), "");
1331     static_assert((std::is_same<decltype(remquo((int)0, (unsigned long long)0, &ip)), double>::value), "");
1332     static_assert((std::is_same<decltype(remquo((double)0, (double)0, &ip)), double>::value), "");
1333     static_assert((std::is_same<decltype(remquo((long double)0, (long double)0, &ip)), long double>::value), "");
1334     static_assert((std::is_same<decltype(remquo((float)0, (double)0, &ip)), double>::value), "");
1335     static_assert((std::is_same<decltype(remquo((float)0, (long double)0, &ip)), long double>::value), "");
1336     static_assert((std::is_same<decltype(remquo((double)0, (long double)0, &ip)), long double>::value), "");
1337     static_assert((std::is_same<decltype(remquof(0,0, &ip)), float>::value), "");
1338     static_assert((std::is_same<decltype(remquol(0,0, &ip)), long double>::value), "");
1339     static_assert((std::is_same<decltype(remquo((int)0, (int)0, &ip)), double>::value), "");
1340     static_assert((std::is_same<decltype(remquo(Ambiguous(), Ambiguous(), &ip)), Ambiguous>::value), "");
1341     assert(remquo(0.5,1, &ip) == 0.5);
1342 }
1343 
1344 void test_rint()
1345 {
1346     static_assert((std::is_same<decltype(rint((float)0)), float>::value), "");
1347     static_assert((std::is_same<decltype(rint((bool)0)), double>::value), "");
1348     static_assert((std::is_same<decltype(rint((unsigned short)0)), double>::value), "");
1349     static_assert((std::is_same<decltype(rint((int)0)), double>::value), "");
1350     static_assert((std::is_same<decltype(rint((unsigned int)0)), double>::value), "");
1351     static_assert((std::is_same<decltype(rint((long)0)), double>::value), "");
1352     static_assert((std::is_same<decltype(rint((unsigned long)0)), double>::value), "");
1353     static_assert((std::is_same<decltype(rint((long long)0)), double>::value), "");
1354     static_assert((std::is_same<decltype(rint((unsigned long long)0)), double>::value), "");
1355     static_assert((std::is_same<decltype(rint((double)0)), double>::value), "");
1356     static_assert((std::is_same<decltype(rint((long double)0)), long double>::value), "");
1357     static_assert((std::is_same<decltype(rintf(0)), float>::value), "");
1358     static_assert((std::is_same<decltype(rintl(0)), long double>::value), "");
1359     static_assert((std::is_same<decltype(rint(Ambiguous())), Ambiguous>::value), "");
1360     assert(rint(1) == 1);
1361 }
1362 
1363 void test_round()
1364 {
1365     static_assert((std::is_same<decltype(round((float)0)), float>::value), "");
1366     static_assert((std::is_same<decltype(round((bool)0)), double>::value), "");
1367     static_assert((std::is_same<decltype(round((unsigned short)0)), double>::value), "");
1368     static_assert((std::is_same<decltype(round((int)0)), double>::value), "");
1369     static_assert((std::is_same<decltype(round((unsigned int)0)), double>::value), "");
1370     static_assert((std::is_same<decltype(round((long)0)), double>::value), "");
1371     static_assert((std::is_same<decltype(round((unsigned long)0)), double>::value), "");
1372     static_assert((std::is_same<decltype(round((long long)0)), double>::value), "");
1373     static_assert((std::is_same<decltype(round((unsigned long long)0)), double>::value), "");
1374     static_assert((std::is_same<decltype(round((double)0)), double>::value), "");
1375     static_assert((std::is_same<decltype(round((long double)0)), long double>::value), "");
1376     static_assert((std::is_same<decltype(roundf(0)), float>::value), "");
1377     static_assert((std::is_same<decltype(roundl(0)), long double>::value), "");
1378     static_assert((std::is_same<decltype(round(Ambiguous())), Ambiguous>::value), "");
1379     assert(round(1) == 1);
1380 }
1381 
1382 void test_scalbln()
1383 {
1384     static_assert((std::is_same<decltype(scalbln((float)0, (long)0)), float>::value), "");
1385     static_assert((std::is_same<decltype(scalbln((bool)0, (long)0)), double>::value), "");
1386     static_assert((std::is_same<decltype(scalbln((unsigned short)0, (long)0)), double>::value), "");
1387     static_assert((std::is_same<decltype(scalbln((int)0, (long)0)), double>::value), "");
1388     static_assert((std::is_same<decltype(scalbln((unsigned int)0, (long)0)), double>::value), "");
1389     static_assert((std::is_same<decltype(scalbln((long)0, (long)0)), double>::value), "");
1390     static_assert((std::is_same<decltype(scalbln((unsigned long)0, (long)0)), double>::value), "");
1391     static_assert((std::is_same<decltype(scalbln((long long)0, (long)0)), double>::value), "");
1392     static_assert((std::is_same<decltype(scalbln((unsigned long long)0, (long)0)), double>::value), "");
1393     static_assert((std::is_same<decltype(scalbln((double)0, (long)0)), double>::value), "");
1394     static_assert((std::is_same<decltype(scalbln((long double)0, (long)0)), long double>::value), "");
1395     static_assert((std::is_same<decltype(scalblnf(0, (long)0)), float>::value), "");
1396     static_assert((std::is_same<decltype(scalblnl(0, (long)0)), long double>::value), "");
1397     static_assert((std::is_same<decltype(scalbln(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1398     assert(scalbln(1, 1) == 2);
1399 }
1400 
1401 void test_scalbn()
1402 {
1403     static_assert((std::is_same<decltype(scalbn((float)0, (int)0)), float>::value), "");
1404     static_assert((std::is_same<decltype(scalbn((bool)0, (int)0)), double>::value), "");
1405     static_assert((std::is_same<decltype(scalbn((unsigned short)0, (int)0)), double>::value), "");
1406     static_assert((std::is_same<decltype(scalbn((int)0, (int)0)), double>::value), "");
1407     static_assert((std::is_same<decltype(scalbn((unsigned int)0, (int)0)), double>::value), "");
1408     static_assert((std::is_same<decltype(scalbn((long)0, (int)0)), double>::value), "");
1409     static_assert((std::is_same<decltype(scalbn((unsigned long)0, (int)0)), double>::value), "");
1410     static_assert((std::is_same<decltype(scalbn((long long)0, (int)0)), double>::value), "");
1411     static_assert((std::is_same<decltype(scalbn((unsigned long long)0, (int)0)), double>::value), "");
1412     static_assert((std::is_same<decltype(scalbn((double)0, (int)0)), double>::value), "");
1413     static_assert((std::is_same<decltype(scalbn((long double)0, (int)0)), long double>::value), "");
1414     static_assert((std::is_same<decltype(scalbnf(0, (int)0)), float>::value), "");
1415     static_assert((std::is_same<decltype(scalbnl(0, (int)0)), long double>::value), "");
1416     static_assert((std::is_same<decltype(scalbn(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1417     assert(scalbn(1, 1) == 2);
1418 }
1419 
1420 void test_tgamma()
1421 {
1422     static_assert((std::is_same<decltype(tgamma((float)0)), float>::value), "");
1423     static_assert((std::is_same<decltype(tgamma((bool)0)), double>::value), "");
1424     static_assert((std::is_same<decltype(tgamma((unsigned short)0)), double>::value), "");
1425     static_assert((std::is_same<decltype(tgamma((int)0)), double>::value), "");
1426     static_assert((std::is_same<decltype(tgamma((unsigned int)0)), double>::value), "");
1427     static_assert((std::is_same<decltype(tgamma((long)0)), double>::value), "");
1428     static_assert((std::is_same<decltype(tgamma((unsigned long)0)), double>::value), "");
1429     static_assert((std::is_same<decltype(tgamma((long long)0)), double>::value), "");
1430     static_assert((std::is_same<decltype(tgamma((unsigned long long)0)), double>::value), "");
1431     static_assert((std::is_same<decltype(tgamma((double)0)), double>::value), "");
1432     static_assert((std::is_same<decltype(tgamma((long double)0)), long double>::value), "");
1433     static_assert((std::is_same<decltype(tgammaf(0)), float>::value), "");
1434     static_assert((std::is_same<decltype(tgammal(0)), long double>::value), "");
1435     static_assert((std::is_same<decltype(tgamma(Ambiguous())), Ambiguous>::value), "");
1436     assert(tgamma(1) == 1);
1437 }
1438 
1439 void test_trunc()
1440 {
1441     static_assert((std::is_same<decltype(trunc((float)0)), float>::value), "");
1442     static_assert((std::is_same<decltype(trunc((bool)0)), double>::value), "");
1443     static_assert((std::is_same<decltype(trunc((unsigned short)0)), double>::value), "");
1444     static_assert((std::is_same<decltype(trunc((int)0)), double>::value), "");
1445     static_assert((std::is_same<decltype(trunc((unsigned int)0)), double>::value), "");
1446     static_assert((std::is_same<decltype(trunc((long)0)), double>::value), "");
1447     static_assert((std::is_same<decltype(trunc((unsigned long)0)), double>::value), "");
1448     static_assert((std::is_same<decltype(trunc((long long)0)), double>::value), "");
1449     static_assert((std::is_same<decltype(trunc((unsigned long long)0)), double>::value), "");
1450     static_assert((std::is_same<decltype(trunc((double)0)), double>::value), "");
1451     static_assert((std::is_same<decltype(trunc((long double)0)), long double>::value), "");
1452     static_assert((std::is_same<decltype(truncf(0)), float>::value), "");
1453     static_assert((std::is_same<decltype(truncl(0)), long double>::value), "");
1454     static_assert((std::is_same<decltype(trunc(Ambiguous())), Ambiguous>::value), "");
1455     assert(trunc(1) == 1);
1456 }
1457 
1458 int main()
1459 {
1460     test_abs();
1461     test_acos();
1462     test_asin();
1463     test_atan();
1464     test_atan2();
1465     test_ceil();
1466     test_cos();
1467     test_cosh();
1468     test_exp();
1469     test_fabs();
1470     test_floor();
1471     test_fmod();
1472     test_frexp();
1473     test_ldexp();
1474     test_log();
1475     test_log10();
1476     test_modf();
1477     test_pow();
1478     test_sin();
1479     test_sinh();
1480     test_sqrt();
1481     test_tan();
1482     test_tanh();
1483     test_signbit();
1484     test_fpclassify();
1485     test_isfinite();
1486     test_isnormal();
1487     test_isgreater();
1488     test_isgreaterequal();
1489     test_isinf();
1490     test_isless();
1491     test_islessequal();
1492     test_islessgreater();
1493     test_isnan();
1494     test_isunordered();
1495     test_acosh();
1496     test_asinh();
1497     test_atanh();
1498     test_cbrt();
1499     test_copysign();
1500     test_erf();
1501     test_erfc();
1502     test_exp2();
1503     test_expm1();
1504     test_fdim();
1505     test_fma();
1506     test_fmax();
1507     test_fmin();
1508     test_hypot();
1509     test_ilogb();
1510     test_lgamma();
1511     test_llrint();
1512     test_llround();
1513     test_log1p();
1514     test_log2();
1515     test_logb();
1516     test_lrint();
1517     test_lround();
1518     test_nan();
1519     test_nearbyint();
1520     test_nextafter();
1521     test_nexttoward();
1522     test_remainder();
1523     test_remquo();
1524     test_rint();
1525     test_round();
1526     test_scalbln();
1527     test_scalbn();
1528     test_tgamma();
1529     test_trunc();
1530 }
1531