]>
git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/ieee754/ldbl-96/s_sincosl.c
1 /* Compute sine and cosine of argument.
2 Copyright (C) 1997-2018 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
23 #include <math_private.h>
24 #include <libm-alias-ldouble.h>
28 __sincosl (long double x
, long double *sinx
, long double *cosx
)
30 int32_t se
, i0
, i1
__attribute__ ((unused
));
33 GET_LDOUBLE_WORDS (se
, i0
, i1
, x
);
37 if (se
< 0x3ffe || (se
== 0x3ffe && i0
<= 0xc90fdaa2))
39 *sinx
= __kernel_sinl (x
, 0.0, 0);
40 *cosx
= __kernel_cosl (x
, 0.0);
42 else if (se
== 0x7fff)
44 /* sin(Inf or NaN) is NaN */
45 *sinx
= *cosx
= x
- x
;
51 /* Argument reduction needed. */
55 n
= __ieee754_rem_pio2l (x
, y
);
59 *sinx
= __kernel_sinl (y
[0], y
[1], 1);
60 *cosx
= __kernel_cosl (y
[0], y
[1]);
63 *sinx
= __kernel_cosl (y
[0], y
[1]);
64 *cosx
= -__kernel_sinl (y
[0], y
[1], 1);
67 *sinx
= -__kernel_sinl (y
[0], y
[1], 1);
68 *cosx
= -__kernel_cosl (y
[0], y
[1]);
71 *sinx
= -__kernel_cosl (y
[0], y
[1]);
72 *cosx
= __kernel_sinl (y
[0], y
[1], 1);
77 libm_alias_ldouble (__sincos
, sincos
)