blob: f1fd6816d6c87db5723acf75af45dbdbdfe016e0 (
plain) (
blame)
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
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "../int_math.h"
#include "DD.h"
#define makeFinite(x) \
{ \
(x).s.hi = crt_copysign(crt_isinf((x).s.hi) ? 1.0 : 0.0, (x).s.hi); \
(x).s.lo = 0.0; \
}
#define zeroNaN(x) \
{ \
if (crt_isnan((x).s.hi)) { \
(x).s.hi = crt_copysign(0.0, (x).s.hi); \
(x).s.lo = 0.0; \
} \
}
long double _Complex __multc3(long double a, long double b, long double c,
long double d) {
long double ac = __gcc_qmul(a, c);
long double bd = __gcc_qmul(b, d);
long double ad = __gcc_qmul(a, d);
long double bc = __gcc_qmul(b, c);
DD real = {.ld = __gcc_qsub(ac, bd)};
DD imag = {.ld = __gcc_qadd(ad, bc)};
if (crt_isnan(real.s.hi) && crt_isnan(imag.s.hi)) {
int recalc = 0;
DD aDD = {.ld = a};
DD bDD = {.ld = b};
DD cDD = {.ld = c};
DD dDD = {.ld = d};
if (crt_isinf(aDD.s.hi) || crt_isinf(bDD.s.hi)) {
makeFinite(aDD);
makeFinite(bDD);
zeroNaN(cDD);
zeroNaN(dDD);
recalc = 1;
}
if (crt_isinf(cDD.s.hi) || crt_isinf(dDD.s.hi)) {
makeFinite(cDD);
makeFinite(dDD);
zeroNaN(aDD);
zeroNaN(bDD);
recalc = 1;
}
if (!recalc) {
DD acDD = {.ld = ac};
DD bdDD = {.ld = bd};
DD adDD = {.ld = ad};
DD bcDD = {.ld = bc};
if (crt_isinf(acDD.s.hi) || crt_isinf(bdDD.s.hi) ||
crt_isinf(adDD.s.hi) || crt_isinf(bcDD.s.hi)) {
zeroNaN(aDD);
zeroNaN(bDD);
zeroNaN(cDD);
zeroNaN(dDD);
recalc = 1;
}
}
if (recalc) {
real.s.hi = CRT_INFINITY * (aDD.s.hi * cDD.s.hi - bDD.s.hi * dDD.s.hi);
real.s.lo = 0.0;
imag.s.hi = CRT_INFINITY * (aDD.s.hi * dDD.s.hi + bDD.s.hi * cDD.s.hi);
imag.s.lo = 0.0;
}
}
long double _Complex z;
__real__ z = real.ld;
__imag__ z = imag.ld;
return z;
}
|
