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
|
/* { dg-do run } */
/* { dg-options "-mavx512f -O2" } */
/* { dg-require-effective-target avx512f } */
#include "avx512f-check.h"
#include "avx512f-helper.h"
#include <math.h>
union fp_int_t
{
int int_val;
float fp_val;
};
float
get_norm_mant (float source, int signctrl, int interv)
{
int src, sign, exp, fraction;
union fp_int_t bin_conv;
bin_conv.fp_val = source;
src = bin_conv.int_val;
sign = (signctrl & 0x1) ? 0 : (src >> 31);
exp = (src & 0x7f800000) >> 23;
fraction = (src & 0x7fffff);
if (isnan (source))
return signbit (source) ? -NAN : NAN;
if (source == 0.0 || source == -0.0 || isinf (source))
return sign ? -1.0 : 1.0;
if (signbit (source) && (signctrl & 0x2))
return -NAN;
if (!isnormal (source))
{
src = (src & 0xffbfffff);
exp = 0x7f;
while (!(src & 0x400000))
{
src += fraction & 0x400000;
fraction = fraction << 1;
exp--;
}
}
switch (interv)
{
case 0:
exp = 0x7f;
break;
case 1:
exp = ((exp - 0x7f) & 0x1) ? 0x7e : 0x7f;
break;
case 2:
exp = 0x7e;
break;
case 3:
exp = (fraction & 0x400000) ? 0x7e : 0x7f;
break;
default:
abort ();
}
bin_conv.int_val = (sign << 31) | (exp << 23) | fraction;
return bin_conv.fp_val;
}
static void
compute_vgetmantss (float *r, float *s1, float *s2, int interv,
int signctrl)
{
int i;
r[0] = get_norm_mant (s2[0], signctrl, interv);
for (i = 1; i < 4; i++)
{
r[i] = s1[i];
}
}
static void
avx512f_test (void)
{
int i, sign;
union128 res1, src1, src2;
float res_ref[4];
int interv = _MM_MANT_NORM_p5_1;
int signctrl = _MM_MANT_SIGN_src;
src1.x = _mm_set_ps (-24.043, 68.346, -43.35, 546.46);
src2.x = _mm_set_ps (222.222, 333.333, 444.444, -2.0);
res1.x = _mm_getmant_ss (src1.x, src2.x, interv, signctrl);
compute_vgetmantss (res_ref, src1.a, src2.a, interv, signctrl);
if (check_union128 (res1, res_ref))
abort ();
}
|
