diff options
Diffstat (limited to 'REORG.TODO/sysdeps/ieee754/ldbl-96/s_sincosl.c')
| -rw-r--r-- | REORG.TODO/sysdeps/ieee754/ldbl-96/s_sincosl.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/ieee754/ldbl-96/s_sincosl.c b/REORG.TODO/sysdeps/ieee754/ldbl-96/s_sincosl.c new file mode 100644 index 0000000000..7d33c97162 --- /dev/null +++ b/REORG.TODO/sysdeps/ieee754/ldbl-96/s_sincosl.c @@ -0,0 +1,76 @@ +/* Compute sine and cosine of argument. + Copyright (C) 1997-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <math.h> + +#include <math_private.h> + + +void +__sincosl (long double x, long double *sinx, long double *cosx) +{ + int32_t se, i0, i1 __attribute__ ((unused)); + + /* High word of x. */ + GET_LDOUBLE_WORDS (se, i0, i1, x); + + /* |x| ~< pi/4 */ + se &= 0x7fff; + if (se < 0x3ffe || (se == 0x3ffe && i0 <= 0xc90fdaa2)) + { + *sinx = __kernel_sinl (x, 0.0, 0); + *cosx = __kernel_cosl (x, 0.0); + } + else if (se == 0x7fff) + { + /* sin(Inf or NaN) is NaN */ + *sinx = *cosx = x - x; + if (isinf (x)) + __set_errno (EDOM); + } + else + { + /* Argument reduction needed. */ + long double y[2]; + int n; + + n = __ieee754_rem_pio2l (x, y); + switch (n & 3) + { + case 0: + *sinx = __kernel_sinl (y[0], y[1], 1); + *cosx = __kernel_cosl (y[0], y[1]); + break; + case 1: + *sinx = __kernel_cosl (y[0], y[1]); + *cosx = -__kernel_sinl (y[0], y[1], 1); + break; + case 2: + *sinx = -__kernel_sinl (y[0], y[1], 1); + *cosx = -__kernel_cosl (y[0], y[1]); + break; + default: + *sinx = -__kernel_cosl (y[0], y[1]); + *cosx = __kernel_sinl (y[0], y[1], 1); + break; + } + } +} +weak_alias (__sincosl, sincosl) |