1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
//===-- fixunssfti_test.c - Test __fixunssfti -----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file tests __fixunssfti for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
#ifdef CRT_HAS_128BIT
// Returns: convert a to a unsigned long long, rounding toward zero.
// Negative values all become zero.
// Assumption: float is a IEEE 32 bit floating point type
// tu_int is a 64 bit integral type
// value in float is representable in tu_int or is negative
// (no range checking performed)
// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
tu_int __fixunssfti(float a);
int test__fixunssfti(float a, tu_int expected)
{
tu_int x = __fixunssfti(a);
if (x != expected)
{
utwords xt;
xt.all = x;
utwords expectedt;
expectedt.all = expected;
printf("error in __fixunssfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
}
return x != expected;
}
char assumption_1[sizeof(tu_int) == 2*sizeof(di_int)] = {0};
char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
#endif
int main()
{
#ifdef CRT_HAS_128BIT
if (test__fixunssfti(0.0F, 0))
return 1;
if (test__fixunssfti(0.5F, 0))
return 1;
if (test__fixunssfti(0.99F, 0))
return 1;
if (test__fixunssfti(1.0F, 1))
return 1;
if (test__fixunssfti(1.5F, 1))
return 1;
if (test__fixunssfti(1.99F, 1))
return 1;
if (test__fixunssfti(2.0F, 2))
return 1;
if (test__fixunssfti(2.01F, 2))
return 1;
if (test__fixunssfti(-0.5F, 0))
return 1;
if (test__fixunssfti(-0.99F, 0))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfti(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
return 1;
if (test__fixunssfti(-1.5F, 0))
return 1;
if (test__fixunssfti(-1.99F, 0))
return 1;
if (test__fixunssfti(-2.0F, 0))
return 1;
if (test__fixunssfti(-2.01F, 0))
return 1;
#endif
if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000LL))
return 1;
if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000LL))
return 1;
if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
return 1;
if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
return 1;
if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000LL, 0)))
return 1;
if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000LL, 0)))
return 1;
if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
return 1;
if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
return 1;
if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
return 1;
if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL))
return 1;
if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL))
return 1;
#endif
#endif
return 0;
}
|
