diff options
Diffstat (limited to 'math/w_exp10f.c')
| -rw-r--r-- | math/w_exp10f.c | 61 |
1 files changed, 28 insertions, 33 deletions
diff --git a/math/w_exp10f.c b/math/w_exp10f.c index dcc8dc768e..6fd52f9a3e 100644 --- a/math/w_exp10f.c +++ b/math/w_exp10f.c @@ -1,45 +1,40 @@ -/* w_exp10f.c -- float version of w_exp10.c. - * Conversion to exp10 by Ulrich Drepper <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 expf10(x) + * wrapper exp10f(x) */ #include <math.h> #include <math_private.h> -#ifdef __STDC__ - float __exp10f(float x) /* wrapper exp10f */ -#else - float __exp10f(x) /* wrapper exp10f */ - float x; -#endif +float +__exp10f (float x) { -#ifdef _IEEE_LIBM - return __ieee754_exp10f(x); -#else - float z; - z = __ieee754_exp10f(x); - if(_LIB_VERSION == _IEEE_) return z; - if(!__finitef(z) && __finitef(x)) { - /* exp10f overflow (146) if x > 0, underflow (147) if x < 0. */ - return (float)__kernel_standard((double) x, (double) x, - 146+!!__signbitf(x)); - } - return z; -#endif + float z = __ieee754_exp10f (x); + if (__builtin_expect (!__finitef (z), 0) + && __finitef (x) && _LIB_VERSION != _IEEE_) + /* exp10f overflow (146) if x > 0, underflow (147) if x < 0. */ + return __kernel_standard_f (x, x, 146 + !!__signbitf (x)); + + return z; } weak_alias (__exp10f, exp10f) strong_alias (__exp10f, __pow10f) |