1" test float functions
2
3if !has('float')
4  finish
5end
6
7func Test_abs()
8  call assert_equal('1.23', string(abs(1.23)))
9  call assert_equal('1.23', string(abs(-1.23)))
10  call assert_equal('0.0', string(abs(0.0)))
11  call assert_equal('0.0', string(abs(1.0/(1.0/0.0))))
12  call assert_equal('0.0', string(abs(-1.0/(1.0/0.0))))
13  call assert_equal('inf', string(abs(1.0/0.0)))
14  call assert_equal('inf', string(abs(-1.0/0.0)))
15  call assert_equal('nan', string(abs(0.0/0.0)))
16  call assert_equal('12', string(abs('-12abc')))
17  call assert_fails("call abs([])", 'E745:')
18  call assert_fails("call abs({})", 'E728:')
19  call assert_fails("call abs(function('string'))", 'E703:')
20endfunc
21
22func Test_sqrt()
23  call assert_equal('0.0', string(sqrt(0.0)))
24  call assert_equal('1.414214', string(sqrt(2.0)))
25  call assert_equal('inf', string(sqrt(1.0/0.0)))
26  call assert_equal('nan', string(sqrt(-1.0)))
27  call assert_equal('nan', string(sqrt(0.0/0.0)))
28  call assert_fails('call sqrt("")', 'E808:')
29endfunc
30
31func Test_log()
32  call assert_equal('0.0', string(log(1.0)))
33  call assert_equal('-0.693147', string(log(0.5)))
34  call assert_equal('-inf', string(log(0.0)))
35  call assert_equal('nan', string(log(-1.0)))
36  call assert_equal('inf', string(log(1.0/0.0)))
37  call assert_equal('nan', string(log(0.0/0.0)))
38  call assert_fails('call log("")', 'E808:')
39endfunc
40
41func Test_log10()
42  call assert_equal('0.0', string(log10(1.0)))
43  call assert_equal('2.0', string(log10(100.0)))
44  call assert_equal('2.079181', string(log10(120.0)))
45  call assert_equal('-inf', string(log10(0.0)))
46  call assert_equal('nan', string(log10(-1.0)))
47  call assert_equal('inf', string(log10(1.0/0.0)))
48  call assert_equal('nan', string(log10(0.0/0.0)))
49  call assert_fails('call log10("")', 'E808:')
50endfunc
51
52func Test_exp()
53  call assert_equal('1.0', string(exp(0.0)))
54  call assert_equal('7.389056', string(exp(2.0)))
55  call assert_equal('0.367879', string(exp(-1.0)))
56  call assert_equal('inf', string(exp(1.0/0.0)))
57  call assert_equal('0.0', string(exp(-1.0/0.0)))
58  call assert_equal('nan', string(exp(0.0/0.0)))
59  call assert_fails('call exp("")', 'E808:')
60endfunc
61
62func Test_sin()
63  call assert_equal('0.0', string(sin(0.0)))
64  call assert_equal('0.841471', string(sin(1.0)))
65  call assert_equal('-0.479426', string(sin(-0.5)))
66  call assert_equal('nan', string(sin(0.0/0.0)))
67  call assert_equal('nan', string(sin(1.0/0.0)))
68  call assert_equal('0.0', string(sin(1.0/(1.0/0.0))))
69  call assert_equal('-0.0', string(sin(-1.0/(1.0/0.0))))
70  call assert_fails('call sin("")', 'E808:')
71endfunc
72
73func Test_asin()
74  call assert_equal('0.0', string(asin(0.0)))
75  call assert_equal('1.570796', string(asin(1.0)))
76  call assert_equal('-0.523599', string(asin(-0.5)))
77  call assert_equal('nan', string(asin(1.1)))
78  call assert_equal('nan', string(asin(1.0/0.0)))
79  call assert_equal('nan', string(asin(0.0/0.0)))
80  call assert_fails('call asin("")', 'E808:')
81endfunc
82
83func Test_sinh()
84  call assert_equal('0.0', string(sinh(0.0)))
85  call assert_equal('0.521095', string(sinh(0.5)))
86  call assert_equal('-1.026517', string(sinh(-0.9)))
87  call assert_equal('inf', string(sinh(1.0/0.0)))
88  call assert_equal('-inf', string(sinh(-1.0/0.0)))
89  call assert_equal('nan', string(sinh(0.0/0.0)))
90  call assert_fails('call sinh("")', 'E808:')
91endfunc
92
93func Test_cos()
94  call assert_equal('1.0', string(cos(0.0)))
95  call assert_equal('0.540302', string(cos(1.0)))
96  call assert_equal('0.877583', string(cos(-0.5)))
97  call assert_equal('nan', string(cos(0.0/0.0)))
98  call assert_equal('nan', string(cos(1.0/0.0)))
99  call assert_fails('call cos("")', 'E808:')
100endfunc
101
102func Test_acos()
103  call assert_equal('1.570796', string(acos(0.0)))
104  call assert_equal('0.0', string(acos(1.0)))
105  call assert_equal('3.141593', string(acos(-1.0)))
106  call assert_equal('2.094395', string(acos(-0.5)))
107  call assert_equal('nan', string(acos(1.1)))
108  call assert_equal('nan', string(acos(1.0/0.0)))
109  call assert_equal('nan', string(acos(0.0/0.0)))
110  call assert_fails('call acos("")', 'E808:')
111endfunc
112
113func Test_cosh()
114  call assert_equal('1.0', string(cosh(0.0)))
115  call assert_equal('1.127626', string(cosh(0.5)))
116  call assert_equal('inf', string(cosh(1.0/0.0)))
117  call assert_equal('inf', string(cosh(-1.0/0.0)))
118  call assert_equal('nan', string(cosh(0.0/0.0)))
119  call assert_fails('call cosh("")', 'E808:')
120endfunc
121
122func Test_tan()
123  call assert_equal('0.0', string(tan(0.0)))
124  call assert_equal('0.546302', string(tan(0.5)))
125  call assert_equal('-0.546302', string(tan(-0.5)))
126  call assert_equal('nan', string(tan(1.0/0.0)))
127  call assert_equal('nan', string(cos(0.0/0.0)))
128  call assert_equal('0.0', string(tan(1.0/(1.0/0.0))))
129  call assert_equal('-0.0', string(tan(-1.0/(1.0/0.0))))
130  call assert_fails('call tan("")', 'E808:')
131endfunc
132
133func Test_atan()
134  call assert_equal('0.0', string(atan(0.0)))
135  call assert_equal('0.463648', string(atan(0.5)))
136  call assert_equal('-0.785398', string(atan(-1.0)))
137  call assert_equal('1.570796', string(atan(1.0/0.0)))
138  call assert_equal('-1.570796', string(atan(-1.0/0.0)))
139  call assert_equal('nan', string(atan(0.0/0.0)))
140  call assert_fails('call atan("")', 'E808:')
141endfunc
142
143func Test_atan2()
144  call assert_equal('-2.356194', string(atan2(-1, -1)))
145  call assert_equal('2.356194', string(atan2(1, -1)))
146  call assert_equal('0.0', string(atan2(1.0, 1.0/0.0)))
147  call assert_equal('1.570796', string(atan2(1.0/0.0, 1.0)))
148  call assert_equal('nan', string(atan2(0.0/0.0, 1.0)))
149  call assert_fails('call atan2("", -1)', 'E808:')
150  call assert_fails('call atan2(-1, "")', 'E808:')
151endfunc
152
153func Test_tanh()
154  call assert_equal('0.0', string(tanh(0.0)))
155  call assert_equal('0.462117', string(tanh(0.5)))
156  call assert_equal('-0.761594', string(tanh(-1.0)))
157  call assert_equal('1.0', string(tanh(1.0/0.0)))
158  call assert_equal('-1.0', string(tanh(-1.0/0.0)))
159  call assert_equal('nan', string(tanh(0.0/0.0)))
160  call assert_fails('call tanh("")', 'E808:')
161endfunc
162
163func Test_fmod()
164  call assert_equal('0.13', string(fmod(12.33, 1.22)))
165  call assert_equal('-0.13', string(fmod(-12.33, 1.22)))
166  call assert_equal('nan', string(fmod(1.0/0.0, 1.0)))
167  " On Windows we get "nan" instead of 1.0, accept both.
168  let res = string(fmod(1.0, 1.0/0.0))
169  if res != 'nan'
170    call assert_equal('1.0', res)
171  endif
172  call assert_equal('nan', string(fmod(1.0, 0.0)))
173  call assert_fails("call fmod('', 1.22)", 'E808:')
174  call assert_fails("call fmod(12.33, '')", 'E808:')
175endfunc
176
177func Test_pow()
178  call assert_equal('1.0', string(pow(0.0, 0.0)))
179  call assert_equal('8.0', string(pow(2.0, 3.0)))
180  call assert_equal('nan', string(pow(2.0, 0.0/0.0)))
181  call assert_equal('nan', string(pow(0.0/0.0, 3.0)))
182  call assert_equal('nan', string(pow(0.0/0.0, 3.0)))
183  call assert_equal('inf', string(pow(2.0, 1.0/0.0)))
184  call assert_equal('inf', string(pow(1.0/0.0, 3.0)))
185  call assert_fails("call pow('', 2.0)", 'E808:')
186  call assert_fails("call pow(2.0, '')", 'E808:')
187endfunc
188
189func Test_str2float()
190  call assert_equal('1.0', string(str2float('1')))
191  call assert_equal('1.0', string(str2float(' 1 ')))
192  call assert_equal('1.0', string(str2float(' 1.0 ')))
193  call assert_equal('1.23', string(str2float('1.23')))
194  call assert_equal('1.23', string(str2float('1.23abc')))
195  call assert_equal('1.0e40', string(str2float('1e40')))
196  call assert_equal('-1.23', string(str2float('-1.23')))
197  call assert_equal('1.23', string(str2float(' + 1.23 ')))
198
199  call assert_equal('1.0', string(str2float('+1')))
200  call assert_equal('1.0', string(str2float('+1')))
201  call assert_equal('1.0', string(str2float(' +1 ')))
202  call assert_equal('1.0', string(str2float(' + 1 ')))
203
204  call assert_equal('-1.0', string(str2float('-1')))
205  call assert_equal('-1.0', string(str2float('-1')))
206  call assert_equal('-1.0', string(str2float(' -1 ')))
207  call assert_equal('-1.0', string(str2float(' - 1 ')))
208
209  call assert_equal('0.0', string(str2float('+0.0')))
210  call assert_equal('-0.0', string(str2float('-0.0')))
211  call assert_equal('inf', string(str2float('1e1000')))
212  call assert_equal('inf', string(str2float('inf')))
213  call assert_equal('-inf', string(str2float('-inf')))
214  call assert_equal('inf', string(str2float('+inf')))
215  call assert_equal('inf', string(str2float('Inf')))
216  call assert_equal('inf', string(str2float('  +inf  ')))
217  call assert_equal('nan', string(str2float('nan')))
218  call assert_equal('nan', string(str2float('NaN')))
219  call assert_equal('nan', string(str2float('  nan  ')))
220
221  call assert_fails("call str2float(1.2)", 'E806:')
222  call assert_fails("call str2float([])", 'E730:')
223  call assert_fails("call str2float({})", 'E731:')
224  call assert_fails("call str2float(function('string'))", 'E729:')
225endfunc
226
227func Test_floor()
228  call assert_equal('2.0', string(floor(2.0)))
229  call assert_equal('2.0', string(floor(2.11)))
230  call assert_equal('2.0', string(floor(2.99)))
231  call assert_equal('-3.0', string(floor(-2.11)))
232  call assert_equal('-3.0', string(floor(-2.99)))
233  call assert_equal('nan', string(floor(0.0/0.0)))
234  call assert_equal('inf', string(floor(1.0/0.0)))
235  call assert_equal('-inf', string(floor(-1.0/0.0)))
236  call assert_fails("call floor('')", 'E808:')
237endfunc
238
239func Test_ceil()
240  call assert_equal('2.0', string(ceil(2.0)))
241  call assert_equal('3.0', string(ceil(2.11)))
242  call assert_equal('3.0', string(ceil(2.99)))
243  call assert_equal('-2.0', string(ceil(-2.11)))
244  call assert_equal('-2.0', string(ceil(-2.99)))
245  call assert_equal('nan', string(ceil(0.0/0.0)))
246  call assert_equal('inf', string(ceil(1.0/0.0)))
247  call assert_equal('-inf', string(ceil(-1.0/0.0)))
248  call assert_fails("call ceil('')", 'E808:')
249endfunc
250
251func Test_round()
252  call assert_equal('2.0', string(round(2.1)))
253  call assert_equal('3.0', string(round(2.5)))
254  call assert_equal('3.0', string(round(2.9)))
255  call assert_equal('-2.0', string(round(-2.1)))
256  call assert_equal('-3.0', string(round(-2.5)))
257  call assert_equal('-3.0', string(round(-2.9)))
258  call assert_equal('nan', string(round(0.0/0.0)))
259  call assert_equal('inf', string(round(1.0/0.0)))
260  call assert_equal('-inf', string(round(-1.0/0.0)))
261  call assert_fails("call round('')", 'E808:')
262endfunc
263
264func Test_trunc()
265  call assert_equal('2.0', string(trunc(2.1)))
266  call assert_equal('2.0', string(trunc(2.5)))
267  call assert_equal('2.0', string(trunc(2.9)))
268  call assert_equal('-2.0', string(trunc(-2.1)))
269  call assert_equal('-2.0', string(trunc(-2.5)))
270  call assert_equal('-2.0', string(trunc(-2.9)))
271  call assert_equal('nan', string(trunc(0.0/0.0)))
272  call assert_equal('inf', string(trunc(1.0/0.0)))
273  call assert_equal('-inf', string(trunc(-1.0/0.0)))
274  call assert_fails("call trunc('')", 'E808:')
275endfunc
276
277func Test_isnan()
278  call assert_equal(0, isnan(1.0))
279  call assert_equal(1, isnan(0.0/0.0))
280  call assert_equal(0, isnan(1.0/0.0))
281  call assert_equal(0, isnan('a'))
282  call assert_equal(0, isnan([]))
283  call assert_equal(0, isnan({}))
284endfunc
285