From abfbdde177c3a7155070dda1b2cdc8292054cc26 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 14 Jul 1999 00:54:57 +0000 Subject: Update. --- sysdeps/generic/s_ccosf.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 sysdeps/generic/s_ccosf.c (limited to 'sysdeps/generic/s_ccosf.c') diff --git a/sysdeps/generic/s_ccosf.c b/sysdeps/generic/s_ccosf.c new file mode 100644 index 0000000000..b090ae5747 --- /dev/null +++ b/sysdeps/generic/s_ccosf.c @@ -0,0 +1,76 @@ +/* Return cosine of complex float value. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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 +#include +#include + + +__complex__ float +__ccosf (__complex__ float x) +{ + __complex__ float res; + + if (!isfinite (__real__ x) || __isnanf (__imag__ x)) + { + if (__real__ x == 0.0 || __imag__ x == 0.0) + { + __real__ res = __nanf (""); + __imag__ res = 0.0; + +#ifdef FE_INVALID + if (__isinff (__real__ x)) + feraiseexcept (FE_INVALID); +#endif + } + else if (__isinff (__imag__ x)) + { + __real__ res = HUGE_VALF; + __imag__ res = __nanf (""); + +#ifdef FE_INVALID + if (__isinff (__real__ x)) + feraiseexcept (FE_INVALID); +#endif + } + else + { + __real__ res = __nanf (""); + __imag__ res = __nanf (""); + +#ifdef FE_INVALID + if (isfinite (__imag__ x)) + feraiseexcept (FE_INVALID); +#endif + } + } + else + { + __complex__ float y; + + __real__ y = -__imag__ x; + __imag__ y = __real__ x; + + res = __ccoshf (y); + } + + return res; +} +weak_alias (__ccosf, ccosf) -- cgit 1.4.1