diff options
Diffstat (limited to 'REORG.TODO/math/s_cacosh_template.c')
| -rw-r--r-- | REORG.TODO/math/s_cacosh_template.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/REORG.TODO/math/s_cacosh_template.c b/REORG.TODO/math/s_cacosh_template.c new file mode 100644 index 0000000000..1fe0f4f1dc --- /dev/null +++ b/REORG.TODO/math/s_cacosh_template.c @@ -0,0 +1,96 @@ +/* Return arc hyperbolic cosine for a complex 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 (__cacosh) (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_HUGE_VAL; + + if (rcls == FP_NAN) + __imag__ res = M_NAN; + else + __imag__ res = M_COPYSIGN ((rcls == FP_INFINITE + ? (__real__ x < 0 + ? M_MLIT (M_PI) - M_MLIT (M_PI_4) + : M_MLIT (M_PI_4)) + : M_MLIT (M_PI_2)), __imag__ x); + } + else if (rcls == FP_INFINITE) + { + __real__ res = M_HUGE_VAL; + + if (icls >= FP_ZERO) + __imag__ res = M_COPYSIGN (signbit (__real__ x) + ? M_MLIT (M_PI) : 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) + { + __real__ res = 0; + __imag__ res = M_COPYSIGN (M_MLIT (M_PI_2), __imag__ x); + } + else + { + CFLOAT y; + + __real__ y = -__imag__ x; + __imag__ y = __real__ x; + + y = M_SUF (__kernel_casinh) (y, 1); + + if (signbit (__imag__ x)) + { + __real__ res = __real__ y; + __imag__ res = -__imag__ y; + } + else + { + __real__ res = -__real__ y; + __imag__ res = __imag__ y; + } + } + + return res; +} + +declare_mgen_alias (__cacosh, cacosh) + +#if M_LIBM_NEED_COMPAT (cacosh) +declare_mgen_libm_compat (__cacosh, cacosh) +#endif |