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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/* { dg-options "-O0" } */
/* Decimal float values can have significant trailing zeroes. This is
true for zero values as well. Check that various representations of
zero are handled correctly when specified as literal constants. */
#include "dfp-dbg.h"
int big_endian;
typedef union U32 {
unsigned int i;
_Decimal32 d;
unsigned char b[4];
} u32_t;
typedef union U64 {
unsigned long long i;
_Decimal64 d;
} u64_t;
typedef union U128 {
unsigned long long i[2];
_Decimal128 d;
} u128_t;
int
compare32 (_Decimal32 d, unsigned int i)
{
u32_t u;
u.d = d;
return (u.i == i);
}
int
compare64 (_Decimal64 d, unsigned long long i)
{
u64_t u;
u.d = d;
return (u.i == i);
}
int
compare128 (_Decimal64 d, unsigned long long i, unsigned long long j)
{
u128_t u;
u.d = d;
if (big_endian)
return (u.i[0] == i && u.i[1] == j);
else
return (u.i[1] == i && u.i[0] == j);
}
void
dpd_tests (void)
{
if (! compare32 (0.DF, 0x22500000U))
FAILURE
if (! compare32 (-0.DF, 0xa2500000U))
FAILURE
if (! compare32 (0.E-4DF, 0x22100000U))
FAILURE
if (! compare32 (0.E-7DF, 0x21e00000U))
FAILURE
if (! compare32 (0.E+3DF, 0x22800000U))
FAILURE
if (! compare64 (0.DD, 0x2238000000000000ULL))
FAILURE
if (! compare64 (-0.DD, 0xa238000000000000ULL))
FAILURE
if (! compare64 (0.E-6DD, 0x2220000000000000ULL))
FAILURE
if (! compare64 (0.E-7DD, 0x221c000000000000ULL))
FAILURE
if (! compare64 (0.E+2DD, 0x2240000000000000ULL))
FAILURE
if (! compare128 (0.DL, 0x2208000000000000ULL, 0x0000000000000000ULL))
FAILURE
if (! compare128 (-0.DL, 0xa208000000000000ULL, 0x0000000000000000ULL))
FAILURE
if (! compare128 (0.E-3DL, 0x2207400000000000ULL, 0x0000000000000000ULL))
FAILURE
if (! compare128 (0.E-8DL, 0x2206000000000000ULL, 0x0000000000000000ULL))
FAILURE
if (! compare128 (0.E+2DL, 0x2208800000000000ULL, 0x0000000000000000ULL))
FAILURE
}
void
bid_tests (void)
{
if (! compare32 (0.DF, 0x32800000U))
FAILURE
if (! compare32 (-0.DF, 0xb2800000U))
FAILURE
if (! compare32 (0.E-4DF, 0x30800000U))
FAILURE
if (! compare32 (0.E-7DF, 0x2f000000U))
FAILURE
if (! compare32 (0.E+3DF, 0x34000000U))
FAILURE
if (! compare64 (0.DD, 0x31c0000000000000ULL))
FAILURE
if (! compare64 (-0.DD, 0xb1c0000000000000ULL))
FAILURE
if (! compare64 (0.E-6DD, 0x3100000000000000ULL))
FAILURE
if (! compare64 (0.E-7DD, 0x30e0000000000000ULL))
FAILURE
if (! compare64 (0.E+2DD, 0x3200000000000000ULL))
FAILURE
if (! compare128 (0.DL, 0x3040000000000000ULL, 0x0000000000000000ULL))
FAILURE
if (! compare128 (-0.DL, 0xb040000000000000ULL, 0x0000000000000000ULL))
FAILURE
if (! compare128 (0.E-3DL, 0x303a000000000000ULL, 0x0000000000000000ULL))
FAILURE
if (! compare128 (0.E-8DL, 0x3030000000000000ULL, 0x0000000000000000ULL))
FAILURE
if (! compare128 (0.E+2DL, 0x3044000000000000ULL, 0x0000000000000000ULL))
FAILURE
}
int
main ()
{
u32_t u32;
/* These sizes are probably always true for targets that support decimal
float types, but check anyway. Abort so we can fix the test. */
if ((sizeof (_Decimal64) != sizeof (long long))
|| (sizeof (_Decimal128) != 2 * sizeof (long long))
|| (sizeof (_Decimal32) != sizeof (_Decimal32)))
FAILURE
u32.d = 1.DF;
if (u32.i == 0x22500001)
{
big_endian = (u32.b[0] == 0x22);
dpd_tests ();
}
else if (u32.i == 0x32800001)
{
big_endian = (u32.b[0] == 0x32);
bid_tests ();
}
else
FAILURE /* unknown format; test problem */
FINISH
}
|
