1 /* Return arc hyperbolic sine for a complex float type. 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. 5 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. 10 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. 15 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/>. */ 19 20 #include "quadmath-imp.h" 21 22 __complex128 casinhq(__complex128 x)23casinhq (__complex128 x) 24 { 25 __complex128 res; 26 int rcls = fpclassifyq (__real__ x); 27 int icls = fpclassifyq (__imag__ x); 28 29 if (rcls <= QUADFP_INFINITE || icls <= QUADFP_INFINITE) 30 { 31 if (icls == QUADFP_INFINITE) 32 { 33 __real__ res = copysignq (HUGE_VALQ, __real__ x); 34 35 if (rcls == QUADFP_NAN) 36 __imag__ res = nanq (""); 37 else 38 __imag__ res = copysignq ((rcls >= QUADFP_ZERO 39 ? M_PI_2q : M_PI_4q), 40 __imag__ x); 41 } 42 else if (rcls <= QUADFP_INFINITE) 43 { 44 __real__ res = __real__ x; 45 if ((rcls == QUADFP_INFINITE && icls >= QUADFP_ZERO) 46 || (rcls == QUADFP_NAN && icls == QUADFP_ZERO)) 47 __imag__ res = copysignq (0, __imag__ x); 48 else 49 __imag__ res = nanq (""); 50 } 51 else 52 { 53 __real__ res = nanq (""); 54 __imag__ res = nanq (""); 55 } 56 } 57 else if (rcls == QUADFP_ZERO && icls == QUADFP_ZERO) 58 { 59 res = x; 60 } 61 else 62 { 63 res = __quadmath_kernel_casinhq (x, 0); 64 } 65 66 return res; 67 } 68