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author | Ulrich Drepper <drepper@gmail.com> | 2011-10-12 11:27:51 -0400 |
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committer | Ulrich Drepper <drepper@gmail.com> | 2011-10-12 11:27:51 -0400 |
commit | 0ac5ae2335292908f39031b1ea9fe8edce433c0f (patch) | |
tree | f9d26c8abc0de39d18d4c13e70f6022cdc6b461f /math/w_acosl.c | |
parent | a843a204a3e8a0dd53584dad3668771abaec84ac (diff) | |
download | glibc-0ac5ae2335292908f39031b1ea9fe8edce433c0f.tar.gz |
Optimize libm
libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.
Diffstat (limited to 'math/w_acosl.c')
-rw-r--r-- | math/w_acosl.c | 64 |
1 files changed, 27 insertions, 37 deletions
diff --git a/math/w_acosl.c b/math/w_acosl.c index a16c55b97a..dd1039ec85 100644 --- a/math/w_acosl.c +++ b/math/w_acosl.c @@ -1,48 +1,38 @@ -/* w_acosl.c -- long double version of w_acos.c. - * Conversion to long double by Ulrich Drepper, - * Cygnus Support, drepper@cygnus.com. - */ +/* Copyright (C) 2011 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@gmail.com>, 2011. -/* - * ==================================================== - * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. - * - * Developed at SunPro, a Sun Microsystems, Inc. business. - * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice - * is preserved. - * ==================================================== - */ + 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. -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: $"; -#endif + 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. -/* - * wrap_acosl(x) - */ + 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 <fenv.h> #include <math.h> #include <math_private.h> -#ifdef __STDC__ - long double __acosl(long double x) /* wrapper acos */ -#else - long double __acosl(x) /* wrapper acos */ - long double x; -#endif +/* wrapper acosl */ +long double +__acosl (long double x) { -#ifdef _IEEE_LIBM - return __ieee754_acosl(x); -#else - long double z; - z = __ieee754_acosl(x); - if(_LIB_VERSION == _IEEE_ || __isnanl(x)) return z; - if(fabsl(x)>1.0) { - return __kernel_standard(x,x,201); /* acosl(|x|>1) */ - } else - return z; -#endif + if (__builtin_expect (fabsl (x) > 1.0L, 0) && _LIB_VERSION != _IEEE_) + { + /* acos(|x|>1) */ + feraiseexcept (FE_INVALID); + return __kernel_standard (x, x, 201); + } + + return __ieee754_acosl (x); } weak_alias (__acosl, acosl) |