From 0ac5ae2335292908f39031b1ea9fe8edce433c0f Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 12 Oct 2011 11:27:51 -0400 Subject: Optimize libm libm is now somewhat integrated with gcc's -ffinite-math-only option and lots of the wrapper functions have been optimized. --- math/w_fmodf.c | 62 +++++++++++++++++++++++----------------------------------- 1 file changed, 24 insertions(+), 38 deletions(-) (limited to 'math/w_fmodf.c') diff --git a/math/w_fmodf.c b/math/w_fmodf.c index 12e2fb3..c0370cf 100644 --- a/math/w_fmodf.c +++ b/math/w_fmodf.c @@ -1,48 +1,34 @@ -/* w_fmodf.c -- float version of w_fmod.c. - * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. - */ +/* Copyright (C) 2011 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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: w_fmodf.c,v 1.3 1995/05/10 20:48:57 jtc Exp $"; -#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. -/* - * wrapper fmodf(x,y) - */ + 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 #include - -#ifdef __STDC__ - float __fmodf(float x, float y) /* wrapper fmodf */ -#else - float __fmodf(x,y) /* wrapper fmodf */ - float x,y; -#endif +/* wrapper fmodf */ +float +__fmodf (float x, float y) { -#ifdef _IEEE_LIBM - return __ieee754_fmodf(x,y); -#else - float z; - z = __ieee754_fmodf(x,y); - if(_LIB_VERSION == _IEEE_ ||__isnanf(y)||__isnanf(x)) return z; - if(__isinf_nsf(x)||y==(float)0.0) { - /* fmodf(+-Inf,y) or fmodf(x,0) */ - return (float)__kernel_standard((double)x,(double)y,127); - } else - return z; -#endif + if (__builtin_expect (__isinf_nsf (x) || y == 0.0f, 0) + && _LIB_VERSION != _IEEE_ && !__isnanf (y) && !__isnanf (x)) + /* fmod(+-Inf,y) or fmod(x,0) */ + return __kernel_standard_f (x, y, 127); + + return __ieee754_fmodf (x, y); } weak_alias (__fmodf, fmodf) -- cgit v1.1