1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 //===-- floatuntidf.c - Test __floatuntidf --------------------------------===//
3 //
4 //                     The LLVM Compiler Infrastructure
5 //
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
8 //
9 //===----------------------------------------------------------------------===//
10 //
11 // This file tests __floatuntidf for the compiler_rt library.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "int_lib.h"
16 #include <float.h>
17 #include <stdio.h>
18 
19 #ifdef CRT_HAS_128BIT
20 
21 // Returns: convert a to a double, rounding toward even.
22 
23 // Assumption: double is a IEEE 64 bit floating point type
24 //             tu_int is a 64 bit integral type
25 
26 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
27 
28 COMPILER_RT_ABI double __floatuntidf(tu_int a);
29 
30 int test__floatuntidf(tu_int a, double expected)
31 {
32     double x = __floatuntidf(a);
33     if (x != expected)
34     {
35         utwords at;
36         at.all = a;
37         printf("error in __floatuntidf(0x%.16llX%.16llX) = %a, expected %a\n",
38                at.s.high, at.s.low, x, expected);
39     }
40     return x != expected;
41 }
42 
43 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
44 char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0};
45 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
46 
47 #endif
48 
49 int main()
50 {
51 #ifdef CRT_HAS_128BIT
52     if (test__floatuntidf(0, 0.0))
53         return 1;
54 
55     if (test__floatuntidf(1, 1.0))
56         return 1;
57     if (test__floatuntidf(2, 2.0))
58         return 1;
59     if (test__floatuntidf(20, 20.0))
60         return 1;
61 
62     if (test__floatuntidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
63         return 1;
64     if (test__floatuntidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
65         return 1;
66     if (test__floatuntidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
67         return 1;
68     if (test__floatuntidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
69         return 1;
70 
71     if (test__floatuntidf(make_ti(0x8000008000000000LL, 0), 0x1.000001p+127))
72         return 1;
73     if (test__floatuntidf(make_ti(0x8000000000000800LL, 0), 0x1.0000000000001p+127))
74         return 1;
75     if (test__floatuntidf(make_ti(0x8000010000000000LL, 0), 0x1.000002p+127))
76         return 1;
77     if (test__floatuntidf(make_ti(0x8000000000001000LL, 0), 0x1.0000000000002p+127))
78         return 1;
79 
80     if (test__floatuntidf(make_ti(0x8000000000000000LL, 0), 0x1.000000p+127))
81         return 1;
82     if (test__floatuntidf(make_ti(0x8000000000000001LL, 0), 0x1.0000000000000002p+127))
83         return 1;
84 
85     if (test__floatuntidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
86         return 1;
87 
88     if (test__floatuntidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
89         return 1;
90     if (test__floatuntidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
91         return 1;
92     if (test__floatuntidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
93         return 1;
94     if (test__floatuntidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
95         return 1;
96     if (test__floatuntidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
97         return 1;
98 
99     if (test__floatuntidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
100         return 1;
101     if (test__floatuntidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
102         return 1;
103     if (test__floatuntidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
104         return 1;
105     if (test__floatuntidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
106         return 1;
107     if (test__floatuntidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
108         return 1;
109 
110     if (test__floatuntidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
111         return 1;
112     if (test__floatuntidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
113         return 1;
114     if (test__floatuntidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
115         return 1;
116     if (test__floatuntidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
117         return 1;
118     if (test__floatuntidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
119         return 1;
120     if (test__floatuntidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
121         return 1;
122     if (test__floatuntidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
123         return 1;
124     if (test__floatuntidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
125         return 1;
126     if (test__floatuntidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
127         return 1;
128     if (test__floatuntidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
129         return 1;
130     if (test__floatuntidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
131         return 1;
132     if (test__floatuntidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
133         return 1;
134     if (test__floatuntidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
135         return 1;
136     if (test__floatuntidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
137         return 1;
138     if (test__floatuntidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
139         return 1;
140 
141     if (test__floatuntidf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121))
142         return 1;
143     if (test__floatuntidf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496Dp+121))
144         return 1;
145     if (test__floatuntidf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496Ep+121))
146         return 1;
147     if (test__floatuntidf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496Ep+121))
148         return 1;
149     if (test__floatuntidf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496Ep+121))
150         return 1;
151     if (test__floatuntidf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496Ep+121))
152         return 1;
153     if (test__floatuntidf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496Ep+121))
154         return 1;
155     if (test__floatuntidf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496Ep+121))
156         return 1;
157     if (test__floatuntidf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496Ep+121))
158         return 1;
159     if (test__floatuntidf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496Ep+121))
160         return 1;
161     if (test__floatuntidf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496Ep+121))
162         return 1;
163     if (test__floatuntidf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496Fp+121))
164         return 1;
165     if (test__floatuntidf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496Fp+121))
166         return 1;
167     if (test__floatuntidf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496Fp+121))
168         return 1;
169     if (test__floatuntidf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121))
170         return 1;
171 #else
172     printf("skipped\n");
173 #endif
174    return 0;
175 }
176