1 /* { dg-do run } */
2 /* { dg-options "-mavx512f -O2 -std=c99" } */
3 /* { dg-require-effective-target avx512f } */
4 /* { dg-require-effective-target c99_runtime } */
5
6 #include "avx512f-check.h"
7 #include <math.h>
8
9 union fp_int_t
10 {
11 long long int int_val;
12 double fp_val;
13 };
14
15 double
get_norm_mant(double source,int signctrl,int interv)16 get_norm_mant (double source, int signctrl, int interv)
17 {
18 long long src, sign, exp, fraction;
19
20 union fp_int_t bin_conv;
21
22 bin_conv.fp_val = source;
23 src = bin_conv.int_val;
24 sign = (signctrl & 0x1) ? 0 : (src >> 63);
25 exp = (src & 0x7ff0000000000000) >> 52;
26 fraction = (src & 0xfffffffffffff);
27
28 if (isnan (source))
29 return signbit (source) ? -NAN : NAN;
30 if (source == 0.0 || source == -0.0 || isinf (source))
31 return sign ? -1.0 : 1.0;
32 if (signbit (source) && (signctrl & 0x2))
33 return -NAN;
34 if (!isnormal (source))
35 {
36 src = (src & 0xfff7ffffffffffff);
37 exp = 0x3ff;
38 while (!(src & 0x8000000000000))
39 {
40 src += fraction & 0x8000000000000;
41 fraction = fraction << 1;
42 exp--;
43 }
44 }
45
46 switch (interv)
47 {
48 case 0:
49 exp = 0x3ff;
50 break;
51 case 1:
52 exp = ((exp - 0x3ff) & 0x1) ? 0x3fe : 0x3ff;
53 break;
54 case 2:
55 exp = 0x3fe;
56 break;
57 case 3:
58 exp = (fraction & 0x8000000000000) ? 0x3fe : 0x3ff;
59 break;
60 default:
61 abort ();
62 }
63
64 bin_conv.int_val = (sign << 63) | (exp << 52) | fraction;
65 return bin_conv.fp_val;
66 }
67
68 static void
compute_vgetmantsd(double * r,double * s1,double * s2,int interv,int signctrl)69 compute_vgetmantsd (double *r, double *s1, double *s2, int interv,
70 int signctrl)
71 {
72 r[0] = get_norm_mant (s2[0], signctrl, interv);
73 r[1] = s1[1];
74 }
75
76 static void
avx512f_test(void)77 avx512f_test (void)
78 {
79 union128d res1, src1, src2;
80 double res_ref[2];
81 int interv = _MM_MANT_NORM_p5_1;
82 int signctrl = _MM_MANT_SIGN_src;
83
84 src1.x = _mm_set_pd (-3.0, 111.111);
85 src2.x = _mm_set_pd (222.222, -2.0);
86
87 res1.x = _mm_getmant_sd (src1.x, src2.x, interv, signctrl);
88
89 compute_vgetmantsd (res_ref, src1.a, src2.a, interv, signctrl);
90
91 if (check_union128d (res1, res_ref))
92 abort ();
93 }
94