diff options
Diffstat (limited to 'gcc-4.9/libquadmath/math/casinq.c')
| -rw-r--r-- | gcc-4.9/libquadmath/math/casinq.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/gcc-4.9/libquadmath/math/casinq.c b/gcc-4.9/libquadmath/math/casinq.c new file mode 100644 index 000000000..122ef5d85 --- /dev/null +++ b/gcc-4.9/libquadmath/math/casinq.c @@ -0,0 +1,60 @@ +/* Return arc sine of complex __float128 value. + Copyright (C) 1997 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include "quadmath-imp.h" + + +__complex128 +casinq (__complex128 x) +{ + __complex128 res; + + if (isnanq (__real__ x) || isnanq (__imag__ x)) + { + if (__real__ x == 0.0) + { + 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; +} |