diff options
Diffstat (limited to 'REORG.TODO/math/s_casinh_template.c')
| -rw-r--r-- | REORG.TODO/math/s_casinh_template.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/REORG.TODO/math/s_casinh_template.c b/REORG.TODO/math/s_casinh_template.c new file mode 100644 index 0000000000..8d7cc5c8f4 --- /dev/null +++ b/REORG.TODO/math/s_casinh_template.c @@ -0,0 +1,75 @@ +/* Return arc hyperbolic sine for a complex float type. + 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 <complex.h> +#include <math.h> +#include <math_private.h> + +CFLOAT +M_DECL_FUNC (__casinh) (CFLOAT x) +{ + CFLOAT res; + int rcls = fpclassify (__real__ x); + int icls = fpclassify (__imag__ x); + + if (rcls <= FP_INFINITE || icls <= FP_INFINITE) + { + if (icls == FP_INFINITE) + { + __real__ res = M_COPYSIGN (M_HUGE_VAL, __real__ x); + + if (rcls == FP_NAN) + __imag__ res = M_NAN; + else + __imag__ res = M_COPYSIGN ((rcls >= FP_ZERO + ? M_MLIT (M_PI_2) : M_MLIT (M_PI_4)), + __imag__ x); + } + else if (rcls <= FP_INFINITE) + { + __real__ res = __real__ x; + if ((rcls == FP_INFINITE && icls >= FP_ZERO) + || (rcls == FP_NAN && icls == FP_ZERO)) + __imag__ res = M_COPYSIGN (0, __imag__ x); + else + __imag__ res = M_NAN; + } + else + { + __real__ res = M_NAN; + __imag__ res = M_NAN; + } + } + else if (rcls == FP_ZERO && icls == FP_ZERO) + { + res = x; + } + else + { + res = M_SUF (__kernel_casinh) (x, 0); + } + + return res; +} + +declare_mgen_alias (__casinh, casinh) + +#if M_LIBM_NEED_COMPAT (casinh) +declare_mgen_libm_compat (__casinh, casinh) +#endif |