1// RUN: %clang_builtins %s %librt -o %t && %run %t
2// REQUIRES: librt_has_fixunssfti
3// REQUIRES: int128
4
5#include "int_lib.h"
6#include <stdio.h>
7
8#ifdef CRT_HAS_128BIT
9
10// Returns: convert a to a unsigned long long, rounding toward zero.
11// Negative values all become zero.
12
13// Assumption: float is a IEEE 32 bit floating point type
14// tu_int is a 64 bit integral type
15// value in float is representable in tu_int or is negative
16// (no range checking performed)
17
18// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
19
20COMPILER_RT_ABI tu_int __fixunssfti(float a);
21
22int test__fixunssfti(float a, tu_int expected)
23{
24 tu_int x = __fixunssfti(a);
25 if (x != expected)
26 {
27 utwords xt;
28 xt.all = x;
29 utwords expectedt;
30 expectedt.all = expected;
31 printf("error in __fixunssfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
32 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
33 }
34 return x != expected;
35}
36
37char assumption_1[sizeof(tu_int) == 2*sizeof(di_int)] = {0};
38char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
39char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
40
41#endif
42
43int main()
44{
45#ifdef CRT_HAS_128BIT
46 if (test__fixunssfti(0.0F, 0))
47 return 1;
48
49 if (test__fixunssfti(0.5F, 0))
50 return 1;
51 if (test__fixunssfti(0.99F, 0))
52 return 1;
53 if (test__fixunssfti(1.0F, 1))
54 return 1;
55 if (test__fixunssfti(1.5F, 1))
56 return 1;
57 if (test__fixunssfti(1.99F, 1))
58 return 1;
59 if (test__fixunssfti(2.0F, 2))
60 return 1;
61 if (test__fixunssfti(2.01F, 2))
62 return 1;
63 if (test__fixunssfti(-0.5F, 0))
64 return 1;
65 if (test__fixunssfti(-0.99F, 0))
66 return 1;
67#if !TARGET_LIBGCC
68 if (test__fixunssfti(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
69 return 1;
70 if (test__fixunssfti(-1.5F, 0))
71 return 1;
72 if (test__fixunssfti(-1.99F, 0))
73 return 1;
74 if (test__fixunssfti(-2.0F, 0))
75 return 1;
76 if (test__fixunssfti(-2.01F, 0))
77 return 1;
78#endif
79
80 if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000ULL))
81 return 1;
82 if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000ULL))
83 return 1;
84 if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
85 return 1;
86 if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
87 return 1;
88
89 if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000ULL, 0)))
90 return 1;
91 if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000ULL, 0)))
92 return 1;
93 if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
94 return 1;
95 if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
96 return 1;
97
98#if !TARGET_LIBGCC
99 if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
100 return 1;
101 if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
102 return 1;
103 if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL))
104 return 1;
105 if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL))
106 return 1;
107#endif
108
109#endif
110 return 0;
111}
112