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
|
//===-- fixunssfsi_test.c - Test __fixunssfsi -----------------------------===//
//
// 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 __fixunssfsi for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
// Returns: convert a to a unsigned int, rounding toward zero.
// Negative values all become zero.
// Assumption: float is a IEEE 32 bit floating point type
// su_int is a 32 bit integral type
// value in float is representable in su_int or is negative
// (no range checking performed)
// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
COMPILER_RT_ABI su_int __fixunssfsi(float a);
int test__fixunssfsi(float a, su_int expected)
{
su_int x = __fixunssfsi(a);
if (x != expected)
printf("error in __fixunssfsi(%A) = %X, expected %X\n", a, x, expected);
return x != expected;
}
char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
int main()
{
if (test__fixunssfsi(0.0F, 0))
return 1;
if (test__fixunssfsi(0.5F, 0))
return 1;
if (test__fixunssfsi(0.99F, 0))
return 1;
if (test__fixunssfsi(1.0F, 1))
return 1;
if (test__fixunssfsi(1.5F, 1))
return 1;
if (test__fixunssfsi(1.99F, 1))
return 1;
if (test__fixunssfsi(2.0F, 2))
return 1;
if (test__fixunssfsi(2.01F, 2))
return 1;
if (test__fixunssfsi(-0.5F, 0))
return 1;
if (test__fixunssfsi(-0.99F, 0))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfsi(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
return 1;
if (test__fixunssfsi(-1.5F, 0))
return 1;
if (test__fixunssfsi(-1.99F, 0))
return 1;
if (test__fixunssfsi(-2.0F, 0))
return 1;
if (test__fixunssfsi(-2.01F, 0))
return 1;
#endif
if (test__fixunssfsi(0x1.000000p+31F, 0x80000000))
return 1;
if (test__fixunssfsi(0x1.000000p+32F, 0xFFFFFFFF))
return 1;
if (test__fixunssfsi(0x1.FFFFFEp+31F, 0xFFFFFF00))
return 1;
if (test__fixunssfsi(0x1.FFFFFEp+30F, 0x7FFFFF80))
return 1;
if (test__fixunssfsi(0x1.FFFFFCp+30F, 0x7FFFFF00))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfsi(-0x1.FFFFFEp+30F, 0))
return 1;
if (test__fixunssfsi(-0x1.FFFFFCp+30F, 0))
return 1;
#endif
return 0;
}
|
