From ea38f4d89c9698895b1cf53a5946429dc1d8bbaa Mon Sep 17 00:00:00 2001 From: Sergey Cherkashin <4erkashin@list.ru> Date: Tue, 3 Oct 2017 15:26:34 +0300 Subject: math: add exception handling functionality According to standards SVID and SYSV. Modified lgamma calling in case when 'signgam' variable should not be used. Signed-off-by: Waldemar Brodkorb --- libm/w_exp10f.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 libm/w_exp10f.c (limited to 'libm/w_exp10f.c') diff --git a/libm/w_exp10f.c b/libm/w_exp10f.c new file mode 100644 index 000000000..cd880e3e2 --- /dev/null +++ b/libm/w_exp10f.c @@ -0,0 +1,42 @@ +/* Copyright (C) 2011-2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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, see + . */ + + +/* + * wrapper exp10f(x) + */ + +#include +#include "math_private.h" + +float +exp10f (float x) +{ +#if __UCLIBC_HAS_FENV__ + float z = (float) __ieee754_exp10 ((double) x); + if (__builtin_expect (!isfinite (z) || z == 0, 0) + && isfinite (x) && _LIB_VERSION != _IEEE_) + /* exp10f overflow (146) if x > 0, underflow (147) if x < 0. */ + return __kernel_standard_f (x, x, 146 + !!signbit (x)); + + return z; +#else + return (float) __ieee754_exp10 ((double) x); +#endif +} +strong_alias (exp10f, pow10f) -- cgit v1.2.3