| /* Return arc hyperbolic sine for a complex float type. |
| Copyright (C) 1997-2018 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 "quadmath-imp.h" |
| |
| __complex128 |
| casinhq (__complex128 x) |
| { |
| __complex128 res; |
| int rcls = fpclassifyq (__real__ x); |
| int icls = fpclassifyq (__imag__ x); |
| |
| if (rcls <= QUADFP_INFINITE || icls <= QUADFP_INFINITE) |
| { |
| if (icls == QUADFP_INFINITE) |
| { |
| __real__ res = copysignq (HUGE_VALQ, __real__ x); |
| |
| if (rcls == QUADFP_NAN) |
| __imag__ res = nanq (""); |
| else |
| __imag__ res = copysignq ((rcls >= QUADFP_ZERO |
| ? M_PI_2q : M_PI_4q), |
| __imag__ x); |
| } |
| else if (rcls <= QUADFP_INFINITE) |
| { |
| __real__ res = __real__ x; |
| if ((rcls == QUADFP_INFINITE && icls >= QUADFP_ZERO) |
| || (rcls == QUADFP_NAN && icls == QUADFP_ZERO)) |
| __imag__ res = copysignq (0, __imag__ x); |
| else |
| __imag__ res = nanq (""); |
| } |
| else |
| { |
| __real__ res = nanq (""); |
| __imag__ res = nanq (""); |
| } |
| } |
| else if (rcls == QUADFP_ZERO && icls == QUADFP_ZERO) |
| { |
| res = x; |
| } |
| else |
| { |
| res = __quadmath_kernel_casinhq (x, 0); |
| } |
| |
| return res; |
| } |