1/* This file is distributed under the University of Illinois Open Source
2 * License. See LICENSE.TXT for details.
3 */
4
5#include "DD.h"
| 1/* This file is distributed under the University of Illinois Open Source
2 * License. See LICENSE.TXT for details.
3 */
4
5#include "DD.h"
|
6#include <math.h>
| 6#include "../int_math.h"
|
7
| 7
|
8#if !defined(INFINITY) && defined(HUGE_VAL)
9#define INFINITY HUGE_VAL
10#endif /* INFINITY */
| 8#define makeFinite(x) { \
9 (x).s.hi = crt_copysign(crt_isinf((x).s.hi) ? 1.0 : 0.0, (x).s.hi); \
10 (x).s.lo = 0.0; \
11 }
|
11
| 12
|
12#define makeFinite(x) { \
13 (x).s.hi = __builtin_copysign(isinf((x).s.hi) ? 1.0 : 0.0, (x).s.hi); \
14 (x).s.lo = 0.0; \
15 }
| 13#define zeroNaN(x) { \
14 if (crt_isnan((x).s.hi)) { \
15 (x).s.hi = crt_copysign(0.0, (x).s.hi); \
16 (x).s.lo = 0.0; \
17 } \
18 }
|
16
| 19
|
17#define zeroNaN(x) { \
18 if (isnan((x).s.hi)) { \
19 (x).s.hi = __builtin_copysign(0.0, (x).s.hi); \
20 (x).s.lo = 0.0; \
21 } \
22 }
23
| |
24long double __gcc_qadd(long double, long double);
25long double __gcc_qsub(long double, long double);
26long double __gcc_qmul(long double, long double);
27
28long double _Complex
29__multc3(long double a, long double b, long double c, long double d)
30{
31 long double ac = __gcc_qmul(a,c);
32 long double bd = __gcc_qmul(b,d);
33 long double ad = __gcc_qmul(a,d);
34 long double bc = __gcc_qmul(b,c);
35
36 DD real = { .ld = __gcc_qsub(ac,bd) };
37 DD imag = { .ld = __gcc_qadd(ad,bc) };
38
| 20long double __gcc_qadd(long double, long double);
21long double __gcc_qsub(long double, long double);
22long double __gcc_qmul(long double, long double);
23
24long double _Complex
25__multc3(long double a, long double b, long double c, long double d)
26{
27 long double ac = __gcc_qmul(a,c);
28 long double bd = __gcc_qmul(b,d);
29 long double ad = __gcc_qmul(a,d);
30 long double bc = __gcc_qmul(b,c);
31
32 DD real = { .ld = __gcc_qsub(ac,bd) };
33 DD imag = { .ld = __gcc_qadd(ad,bc) };
34
|
39 if (isnan(real.s.hi) && isnan(imag.s.hi))
| 35 if (crt_isnan(real.s.hi) && crt_isnan(imag.s.hi))
|
40 {
41 int recalc = 0;
42
43 DD aDD = { .ld = a };
44 DD bDD = { .ld = b };
45 DD cDD = { .ld = c };
46 DD dDD = { .ld = d };
47
| 36 {
37 int recalc = 0;
38
39 DD aDD = { .ld = a };
40 DD bDD = { .ld = b };
41 DD cDD = { .ld = c };
42 DD dDD = { .ld = d };
43
|
48 if (isinf(aDD.s.hi) || isinf(bDD.s.hi))
| 44 if (crt_isinf(aDD.s.hi) || crt_isinf(bDD.s.hi))
|
49 {
50 makeFinite(aDD);
51 makeFinite(bDD);
52 zeroNaN(cDD);
53 zeroNaN(dDD);
54 recalc = 1;
55 }
56
| 45 {
46 makeFinite(aDD);
47 makeFinite(bDD);
48 zeroNaN(cDD);
49 zeroNaN(dDD);
50 recalc = 1;
51 }
52
|
57 if (isinf(cDD.s.hi) || isinf(dDD.s.hi))
| 53 if (crt_isinf(cDD.s.hi) || crt_isinf(dDD.s.hi))
|
58 {
59 makeFinite(cDD);
60 makeFinite(dDD);
61 zeroNaN(aDD);
62 zeroNaN(bDD);
63 recalc = 1;
64 }
65
66 if (!recalc)
67 {
68 DD acDD = { .ld = ac };
69 DD bdDD = { .ld = bd };
70 DD adDD = { .ld = ad };
71 DD bcDD = { .ld = bc };
72
| 54 {
55 makeFinite(cDD);
56 makeFinite(dDD);
57 zeroNaN(aDD);
58 zeroNaN(bDD);
59 recalc = 1;
60 }
61
62 if (!recalc)
63 {
64 DD acDD = { .ld = ac };
65 DD bdDD = { .ld = bd };
66 DD adDD = { .ld = ad };
67 DD bcDD = { .ld = bc };
68
|
73 if (isinf(acDD.s.hi) || isinf(bdDD.s.hi) || isinf(adDD.s.hi) || isinf(bcDD.s.hi))
| 69 if (crt_isinf(acDD.s.hi) || crt_isinf(bdDD.s.hi) ||
70 crt_isinf(adDD.s.hi) || crt_isinf(bcDD.s.hi))
|
74 {
75 zeroNaN(aDD);
76 zeroNaN(bDD);
77 zeroNaN(cDD);
78 zeroNaN(dDD);
79 recalc = 1;
80 }
81 }
82
83 if (recalc)
84 {
| 71 {
72 zeroNaN(aDD);
73 zeroNaN(bDD);
74 zeroNaN(cDD);
75 zeroNaN(dDD);
76 recalc = 1;
77 }
78 }
79
80 if (recalc)
81 {
|
85 real.s.hi = INFINITY * (aDD.s.hi*cDD.s.hi - bDD.s.hi*dDD.s.hi);
| 82 real.s.hi = CRT_INFINITY * (aDD.s.hi*cDD.s.hi - bDD.s.hi*dDD.s.hi);
|
86 real.s.lo = 0.0;
| 83 real.s.lo = 0.0;
|
87 imag.s.hi = INFINITY * (aDD.s.hi*dDD.s.hi + bDD.s.hi*cDD.s.hi);
| 84 imag.s.hi = CRT_INFINITY * (aDD.s.hi*dDD.s.hi + bDD.s.hi*cDD.s.hi);
|
88 imag.s.lo = 0.0;
89 }
90 }
91
92 long double _Complex z;
93 __real__ z = real.ld;
94 __imag__ z = imag.ld;
95
96 return z;
97}
| 85 imag.s.lo = 0.0;
86 }
87 }
88
89 long double _Complex z;
90 __real__ z = real.ld;
91 __imag__ z = imag.ld;
92
93 return z;
94}
|