## Mercurial > hg > CbC > CbC_gcc

### view libquadmath/math/casinq.c @ 158:494b0b89df80 default tip

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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |

parents | 1830386684a0 |

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/* Return arc sine of 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 casinq (__complex128 x) { __complex128 res; if (isnanq (__real__ x) || isnanq (__imag__ x)) { if (__real__ x == 0) { res = x; } else if (isinfq (__real__ x) || isinfq (__imag__ x)) { __real__ res = nanq (""); __imag__ res = copysignq (HUGE_VALQ, __imag__ x); } else { __real__ res = nanq (""); __imag__ res = nanq (""); } } else { __complex128 y; __real__ y = -__imag__ x; __imag__ y = __real__ x; y = casinhq (y); __real__ res = __imag__ y; __imag__ res = -__real__ y; } return res; }