1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_fixsfdi
3
4 #include "int_lib.h"
5 #include <stdio.h>
6
7 // Returns: convert a to a signed long long, rounding toward zero.
8
9 // Assumption: float is a IEEE 32 bit floating point type
10 // su_int is a 32 bit integral type
11 // value in float is representable in di_int (no range checking performed)
12
13 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
14
15 COMPILER_RT_ABI di_int __fixsfdi(float a);
16
test__fixsfdi(float a,di_int expected)17 int test__fixsfdi(float a, di_int expected)
18 {
19 di_int x = __fixsfdi(a);
20 if (x != expected)
21 printf("error in __fixsfdi(%A) = %llX, expected %llX\n", a, x, expected);
22 return x != expected;
23 }
24
25 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
26 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
27 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
28
main()29 int main()
30 {
31 if (test__fixsfdi(0.0F, 0))
32 return 1;
33
34 if (test__fixsfdi(0.5F, 0))
35 return 1;
36 if (test__fixsfdi(0.99F, 0))
37 return 1;
38 if (test__fixsfdi(1.0F, 1))
39 return 1;
40 if (test__fixsfdi(1.5F, 1))
41 return 1;
42 if (test__fixsfdi(1.99F, 1))
43 return 1;
44 if (test__fixsfdi(2.0F, 2))
45 return 1;
46 if (test__fixsfdi(2.01F, 2))
47 return 1;
48 if (test__fixsfdi(-0.5F, 0))
49 return 1;
50 if (test__fixsfdi(-0.99F, 0))
51 return 1;
52 if (test__fixsfdi(-1.0F, -1))
53 return 1;
54 if (test__fixsfdi(-1.5F, -1))
55 return 1;
56 if (test__fixsfdi(-1.99F, -1))
57 return 1;
58 if (test__fixsfdi(-2.0F, -2))
59 return 1;
60 if (test__fixsfdi(-2.01F, -2))
61 return 1;
62
63 if (test__fixsfdi(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
64 return 1;
65 if (test__fixsfdi(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
66 return 1;
67
68 if (test__fixsfdi(-0x1.FFFFFEp+62F, 0x8000008000000000LL))
69 return 1;
70 if (test__fixsfdi(-0x1.FFFFFCp+62F, 0x8000010000000000LL))
71 return 1;
72
73 return 0;
74 }
75