1// RUN: %clang_builtins %s %librt -o %t && %run %t
2// REQUIRES: librt_has_fixunssfsi
3
4#include "int_lib.h"
5#include <stdio.h>
6
7// Returns: convert a to a unsigned int, rounding toward zero.
8// Negative values all become zero.
9
10// Assumption: float is a IEEE 32 bit floating point type
11// su_int is a 32 bit integral type
12// value in float is representable in su_int or is negative
13// (no range checking performed)
14
15// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
16
17COMPILER_RT_ABI su_int __fixunssfsi(float a);
18
19int test__fixunssfsi(float a, su_int expected)
20{
21 su_int x = __fixunssfsi(a);
22 if (x != expected)
23 printf("error in __fixunssfsi(%A) = %X, expected %X\n", a, x, expected);
24 return x != expected;
25}
26
27char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
28char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
29
30int main()
31{
32 if (test__fixunssfsi(0.0F, 0))
33 return 1;
34
35 if (test__fixunssfsi(0.5F, 0))
36 return 1;
37 if (test__fixunssfsi(0.99F, 0))
38 return 1;
39 if (test__fixunssfsi(1.0F, 1))
40 return 1;
41 if (test__fixunssfsi(1.5F, 1))
42 return 1;
43 if (test__fixunssfsi(1.99F, 1))
44 return 1;
45 if (test__fixunssfsi(2.0F, 2))
46 return 1;
47 if (test__fixunssfsi(2.01F, 2))
48 return 1;
49 if (test__fixunssfsi(-0.5F, 0))
50 return 1;
51 if (test__fixunssfsi(-0.99F, 0))
52 return 1;
53#if !TARGET_LIBGCC
54 if (test__fixunssfsi(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
55 return 1;
56 if (test__fixunssfsi(-1.5F, 0))
57 return 1;
58 if (test__fixunssfsi(-1.99F, 0))
59 return 1;
60 if (test__fixunssfsi(-2.0F, 0))
61 return 1;
62 if (test__fixunssfsi(-2.01F, 0))
63 return 1;
64#endif
65
66 if (test__fixunssfsi(0x1.000000p+31F, 0x80000000))
67 return 1;
68 if (test__fixunssfsi(0x1.000000p+32F, 0xFFFFFFFF))
69 return 1;
70 if (test__fixunssfsi(0x1.FFFFFEp+31F, 0xFFFFFF00))
71 return 1;
72 if (test__fixunssfsi(0x1.FFFFFEp+30F, 0x7FFFFF80))
73 return 1;
74 if (test__fixunssfsi(0x1.FFFFFCp+30F, 0x7FFFFF00))
75 return 1;
76
77#if !TARGET_LIBGCC
78 if (test__fixunssfsi(-0x1.FFFFFEp+30F, 0))
79 return 1;
80 if (test__fixunssfsi(-0x1.FFFFFCp+30F, 0))
81 return 1;
82#endif
83
84 return 0;
85}
86