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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
// RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_floatdixf
#include "int_lib.h"
#include <stdio.h>
#if HAS_80_BIT_LONG_DOUBLE
// Returns: convert a to a long double, rounding toward even.
// Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
// di_int is a 64 bit integral type
// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
long COMPILER_RT_ABI double __floatdixf(di_int a);
int test__floatdixf(di_int a, long double expected)
{
long double x = __floatdixf(a);
if (x != expected)
printf("error in __floatdixf(%llX) = %LA, expected %LA\n",
a, x, expected);
return x != expected;
}
char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
#endif
int main()
{
#if HAS_80_BIT_LONG_DOUBLE
if (test__floatdixf(0, 0.0))
return 1;
if (test__floatdixf(1, 1.0))
return 1;
if (test__floatdixf(2, 2.0))
return 1;
if (test__floatdixf(20, 20.0))
return 1;
if (test__floatdixf(-1, -1.0))
return 1;
if (test__floatdixf(-2, -2.0))
return 1;
if (test__floatdixf(-20, -20.0))
return 1;
if (test__floatdixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
return 1;
if (test__floatdixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
return 1;
if (test__floatdixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
return 1;
if (test__floatdixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
return 1;
if (test__floatdixf(0x8000008000000000LL, -0x1.FFFFFEp+62))
return 1;
if (test__floatdixf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
return 1;
if (test__floatdixf(0x8000010000000000LL, -0x1.FFFFFCp+62))
return 1;
if (test__floatdixf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
return 1;
if (test__floatdixf(0x8000000000000000LL, -0x1.000000p+63))
return 1;
if (test__floatdixf(0x8000000000000001LL, -0x1.FFFFFFFFFFFFFFFCp+62L))
return 1;
if (test__floatdixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
return 1;
if (test__floatdixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
return 1;
if (test__floatdixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
return 1;
if (test__floatdixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
return 1;
if (test__floatdixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
return 1;
if (test__floatdixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
return 1;
if (test__floatdixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
return 1;
if (test__floatdixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
return 1;
if (test__floatdixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
return 1;
if (test__floatdixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
return 1;
if (test__floatdixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
return 1;
if (test__floatdixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdixf(0x023479FD0E092DA1LL, 0x8.D1E7F43824B684p+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DB0LL, 0x8.D1E7f43824B6Cp+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DB8LL, 0x8.D1E7F43824B6Ep+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DB6LL, 0x8.D1E7F43824B6D8p+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DBFLL, 0x8.D1E7F43824B6FCp+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DC1LL, 0x8.D1E7F43824B704p+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DC7LL, 0x8.D1E7F43824B71Cp+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DC8LL, 0x8.D1E7F43824B72p+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DCFLL, 0x8.D1E7F43824B73Cp+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DD0LL, 0x8.D1E7F43824B74p+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DD1LL, 0x8.D1E7F43824B744p+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DD8LL, 0x8.D1E7F43824B76p+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DDFLL, 0x8.D1E7F43824B77Cp+54L))
return 1;
if (test__floatdixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}
|
