diff options
author | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
commit | abfbdde177c3a7155070dda1b2cdc8292054cc26 (patch) | |
tree | e021306b596381fbf8311d2b7eb294e918ff17c8 /sysdeps/libm-ieee754/s_csin.c | |
parent | 86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff) | |
download | glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.gz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.xz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.zip |
Update.
Diffstat (limited to 'sysdeps/libm-ieee754/s_csin.c')
-rw-r--r-- | sysdeps/libm-ieee754/s_csin.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/sysdeps/libm-ieee754/s_csin.c b/sysdeps/libm-ieee754/s_csin.c deleted file mode 100644 index 6627387d42..0000000000 --- a/sysdeps/libm-ieee754/s_csin.c +++ /dev/null @@ -1,131 +0,0 @@ -/* Complex sine function 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 -__csin (__complex__ double x) -{ - __complex__ double retval; - int negate = signbit (__real__ x); - int rcls = fpclassify (__real__ x); - int icls = fpclassify (__imag__ x); - - __real__ x = fabs (__real__ x); - - if (icls >= FP_ZERO) - { - /* Imaginary part is finite. */ - if (rcls >= FP_ZERO) - { - /* Real part is finite. */ - double sinh_val = __ieee754_sinh (__imag__ x); - double cosh_val = __ieee754_cosh (__imag__ x); - double sinix, cosix; - - __sincos (__real__ x, &sinix, &cosix); - - __real__ retval = cosh_val * sinix; - __imag__ retval = sinh_val * cosix; - - if (negate) - __real__ retval = -__real__ retval; - } - else - { - if (icls == FP_ZERO) - { - /* Imaginary part is 0.0. */ - __real__ retval = __nan (""); - __imag__ retval = __imag__ x; - -#ifdef FE_INVALID - if (rcls == FP_INFINITE) - feraiseexcept (FE_INVALID); -#endif - } - else - { - __real__ retval = __nan (""); - __imag__ retval = __nan (""); - -#ifdef FE_INVALID - feraiseexcept (FE_INVALID); -#endif - } - } - } - else if (icls == FP_INFINITE) - { - /* Imaginary part is infinite. */ - if (rcls == FP_ZERO) - { - /* Real part is 0.0. */ - __real__ retval = __copysign (0.0, negate ? -1.0 : 1.0); - __imag__ retval = __imag__ x; - } - else if (rcls > FP_ZERO) - { - /* Real part is finite. */ - double sinix, cosix; - - __sincos (__real__ x, &sinix, &cosix); - - __real__ retval = __copysign (HUGE_VAL, sinix); - __imag__ retval = __copysign (HUGE_VAL, cosix); - - if (negate) - __real__ retval = -__real__ retval; - if (signbit (__imag__ x)) - __imag__ retval = -__imag__ retval; - } - else - { - /* The addition raises the invalid exception. */ - __real__ retval = __nan (""); - __imag__ retval = HUGE_VAL; - -#ifdef FE_INVALID - if (rcls == FP_INFINITE) - feraiseexcept (FE_INVALID); -#endif - } - } - else - { - if (rcls == FP_ZERO) - __real__ retval = __copysign (0.0, negate ? -1.0 : 1.0); - else - __real__ retval = __nan (""); - __imag__ retval = __nan (""); - } - - return retval; -} -weak_alias (__csin, csin) -#ifdef NO_LONG_DOUBLE -strong_alias (__csin, __csinl) -weak_alias (__csin, csinl) -#endif |