61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* 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;
|
|
}
|