diff options
Diffstat (limited to 'math/w_jnf.c')
| -rw-r--r-- | math/w_jnf.c | 109 |
1 files changed, 49 insertions, 60 deletions
diff --git a/math/w_jnf.c b/math/w_jnf.c index 0b9a2aa..7b35955 100644 --- a/math/w_jnf.c +++ b/math/w_jnf.c @@ -1,71 +1,60 @@ -/* w_jnf.c -- float version of w_jn.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 <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: w_jnf.c,v 1.3 1995/05/10 20:49:21 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. + 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__ - float jnf(int n, float x) /* wrapper jnf */ -#else - float jnf(n,x) /* wrapper jnf */ - float x; int n; -#endif + +/* wrapper jnf */ +float +jnf (int n, float x) { -#ifdef _IEEE_LIBM - return __ieee754_jnf(n,x); -#else - float z; - z = __ieee754_jnf(n,x); - if(_LIB_VERSION == _IEEE_ || __isnanf(x) ) return z; - if(fabsf(x)>(float)X_TLOSS) { - /* jn(|x|>X_TLOSS,n) */ - return (float)__kernel_standard((double)n,(double)x,138); - } else - return z; -#endif + if (__builtin_expect (fabsf (x) > (float) X_TLOSS, 0) + && _LIB_VERSION != _IEEE_) + /* jn(n,|x|>X_TLOSS) */ + return __kernel_standard_f (n, x, 138); + + return __ieee754_jnf (n, x); } -#ifdef __STDC__ - float ynf(int n, float x) /* wrapper ynf */ -#else - float ynf(n,x) /* wrapper ynf */ - float x; int n; -#endif + +/* wrapper ynf */ +float +ynf (int n, float x) { -#ifdef _IEEE_LIBM - return __ieee754_ynf(n,x); -#else - float z; - z = __ieee754_ynf(n,x); - if(_LIB_VERSION == _IEEE_ || __isnanf(x) ) return z; - if(x <= (float)0.0){ - if(x==(float)0.0) - /* d= -one/(x-x); */ - return (float)__kernel_standard((double)n,(double)x,112); - else - /* d = zero/(x-x); */ - return (float)__kernel_standard((double)n,(double)x,113); - } - if(x>(float)X_TLOSS) { - /* yn(x>X_TLOSS,n) */ - return (float)__kernel_standard((double)n,(double)x,139); - } else - return z; -#endif + if (__builtin_expect (x <= 0.0f || x > (float) X_TLOSS, 0) + && _LIB_VERSION != _IEEE_) + { + if (x < 0.0f) + { + /* d = zero/(x-x) */ + feraiseexcept (FE_INVALID); + return __kernel_standard_f (n, x, 113); + } + else if (x == 0.0) + /* d = -one/(x-x) */ + return __kernel_standard_f (n, x, 112); + else + /* yn(n,x>X_TLOSS) */ + return __kernel_standard_f (n, x, 139); + } + + return __ieee754_ynf (n, x); } |