1// RUN: %clang_builtins %s %librt -o %t && %run %t
2// REQUIRES: librt_has_fixsfti
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 signed long long, rounding toward zero.
11
12// Assumption: float is a IEEE 32 bit floating point type
13// su_int is a 32 bit integral type
14// value in float is representable in ti_int (no range checking performed)
15
16// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
17
18COMPILER_RT_ABI ti_int __fixsfti(float a);
19
20int test__fixsfti(float a, ti_int expected)
21{
22 ti_int x = __fixsfti(a);
23 if (x != expected)
24 {
25 twords xt;
26 xt.all = x;
27 twords expectedt;
28 expectedt.all = expected;
29 printf(format: "error in __fixsfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
30 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
31 }
32 return x != expected;
33}
34
35char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
36char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
37char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
38
39#endif
40
41int main()
42{
43#ifdef CRT_HAS_128BIT
44 if (test__fixsfti(a: 0.0F, expected: 0))
45 return 1;
46
47 if (test__fixsfti(a: 0.5F, expected: 0))
48 return 1;
49 if (test__fixsfti(a: 0.99F, expected: 0))
50 return 1;
51 if (test__fixsfti(a: 1.0F, expected: 1))
52 return 1;
53 if (test__fixsfti(a: 1.5F, expected: 1))
54 return 1;
55 if (test__fixsfti(a: 1.99F, expected: 1))
56 return 1;
57 if (test__fixsfti(a: 2.0F, expected: 2))
58 return 1;
59 if (test__fixsfti(a: 2.01F, expected: 2))
60 return 1;
61 if (test__fixsfti(a: -0.5F, expected: 0))
62 return 1;
63 if (test__fixsfti(a: -0.99F, expected: 0))
64 return 1;
65 if (test__fixsfti(a: -1.0F, expected: -1))
66 return 1;
67 if (test__fixsfti(a: -1.5F, expected: -1))
68 return 1;
69 if (test__fixsfti(a: -1.99F, expected: -1))
70 return 1;
71 if (test__fixsfti(a: -2.0F, expected: -2))
72 return 1;
73 if (test__fixsfti(a: -2.01F, expected: -2))
74 return 1;
75
76 if (test__fixsfti(a: 0x1.FFFFFEp+62F, expected: 0x7FFFFF8000000000LL))
77 return 1;
78 if (test__fixsfti(a: 0x1.FFFFFCp+62F, expected: 0x7FFFFF0000000000LL))
79 return 1;
80
81 if (test__fixsfti(a: -0x1.FFFFFEp+62F, expected: make_ti(h: 0xFFFFFFFFFFFFFFFFLL,
82 l: 0x8000008000000000LL)))
83 return 1;
84 if (test__fixsfti(a: -0x1.FFFFFCp+62F, expected: make_ti(h: 0xFFFFFFFFFFFFFFFFLL,
85 l: 0x8000010000000000LL)))
86 return 1;
87
88 if (test__fixsfti(a: 0x1.FFFFFEp+126F, expected: make_ti(h: 0x7FFFFF8000000000LL, l: 0)))
89 return 1;
90 if (test__fixsfti(a: 0x1.FFFFFCp+126F, expected: make_ti(h: 0x7FFFFF0000000000LL, l: 0)))
91 return 1;
92
93 if (test__fixsfti(a: -0x1.FFFFFEp+126F, expected: make_ti(h: 0x8000008000000000LL, l: 0)))
94 return 1;
95 if (test__fixsfti(a: -0x1.FFFFFCp+126F, expected: make_ti(h: 0x8000010000000000LL, l: 0)))
96 return 1;
97
98#else
99 printf("skipped\n");
100#endif
101 return 0;
102}
103

source code of compiler-rt/test/builtins/Unit/fixsfti_test.c