diff options
Diffstat (limited to 'math/w_exp10l.c')
| -rw-r--r-- | math/w_exp10l.c | 59 |
1 files changed, 27 insertions, 32 deletions
diff --git a/math/w_exp10l.c b/math/w_exp10l.c index 80e720a205..0cda27c76b 100644 --- a/math/w_exp10l.c +++ b/math/w_exp10l.c @@ -1,18 +1,22 @@ -/* w_exp10l.c -- long double version of w_exp10.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. + + 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. + + 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. */ -/* - * ==================================================== - * 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. - * ==================================================== - */ /* * wrapper exp10l(x) @@ -21,25 +25,16 @@ #include <math.h> #include <math_private.h> -#ifdef __STDC__ - long double __exp10l(long double x) /* wrapper exp10 */ -#else - long double __exp10l(x) /* wrapper exp10 */ - long double x; -#endif +long double +__exp10l (long double x) { -#ifdef _IEEE_LIBM - return __ieee754_exp10l(x); -#else - long double z; - z = __ieee754_exp10l(x); - if(_LIB_VERSION == _IEEE_) return z; - if(!__finitel(z) && __finitel(x)) { - /* exp10 overflow (246) if x > 0, underflow (247) if x < 0. */ - return __kernel_standard(x,x,246+__signbitl(x)); - } - return z; -#endif + long double z = __ieee754_exp10l (x); + if (__builtin_expect (!__finitel (z), 0) + && __finitel (x) && _LIB_VERSION != _IEEE_) + /* exp10l overflow (246) if x > 0, underflow (247) if x < 0. */ + return __kernel_standard (x, x, 246 + !!__signbitl (x)); + + return z; } weak_alias (__exp10l, exp10l) strong_alias (__exp10l, __pow10l) |