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author | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
commit | abfbdde177c3a7155070dda1b2cdc8292054cc26 (patch) | |
tree | e021306b596381fbf8311d2b7eb294e918ff17c8 /sysdeps/libm-ieee754/s_ctanh.c | |
parent | 86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff) | |
download | glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.gz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.xz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.zip |
Update.
Diffstat (limited to 'sysdeps/libm-ieee754/s_ctanh.c')
-rw-r--r-- | sysdeps/libm-ieee754/s_ctanh.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/sysdeps/libm-ieee754/s_ctanh.c b/sysdeps/libm-ieee754/s_ctanh.c deleted file mode 100644 index d8825f35f9..0000000000 --- a/sysdeps/libm-ieee754/s_ctanh.c +++ /dev/null @@ -1,74 +0,0 @@ -/* Complex hyperbole tangent for double. - 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <complex.h> -#include <fenv.h> -#include <math.h> - -#include "math_private.h" - - -__complex__ double -__ctanh (__complex__ double x) -{ - __complex__ double res; - - if (!isfinite (__real__ x) || !isfinite (__imag__ x)) - { - if (__isinf (__real__ x)) - { - __real__ res = __copysign (1.0, __real__ x); - __imag__ res = __copysign (0.0, __imag__ x); - } - else if (__imag__ x == 0.0) - { - res = x; - } - else - { - __real__ res = __nan (""); - __imag__ res = __nan (""); - -#ifdef FE_INVALID - if (__isinf (__imag__ x)) - feraiseexcept (FE_INVALID); -#endif - } - } - else - { - double sin2ix, cos2ix; - double den; - - __sincos (2.0 * __imag__ x, &sin2ix, &cos2ix); - - den = (__ieee754_cosh (2.0 * __real__ x) + cos2ix); - - __real__ res = __ieee754_sinh (2.0 * __real__ x) / den; - __imag__ res = sin2ix / den; - } - - return res; -} -weak_alias (__ctanh, ctanh) -#ifdef NO_LONG_DOUBLE -strong_alias (__ctanh, __ctanhl) -weak_alias (__ctanh, ctanhl) -#endif |