diff options
Diffstat (limited to 'math/w_scalb.c')
-rw-r--r-- | math/w_scalb.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/math/w_scalb.c b/math/w_scalb.c deleted file mode 100644 index 8354115512..0000000000 --- a/math/w_scalb.c +++ /dev/null @@ -1,80 +0,0 @@ -/* Copyright (C) 2011-2017 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, see - <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <math.h> -#include <math_private.h> - - -static double -__attribute__ ((noinline)) -sysv_scalb (double x, double fn) -{ - double z = __ieee754_scalb (x, fn); - - if (__glibc_unlikely (isinf (z))) - { - if (isfinite (x)) - return __kernel_standard (x, fn, 32); /* scalb overflow */ - else - __set_errno (ERANGE); - } - else if (__builtin_expect (z == 0.0, 0) && z != x) - return __kernel_standard (x, fn, 33); /* scalb underflow */ - - return z; -} - - -/* Wrapper scalb */ -double -__scalb (double x, double fn) -{ - if (__glibc_unlikely (_LIB_VERSION == _SVID_)) - return sysv_scalb (x, fn); - else - { - double z = __ieee754_scalb (x, fn); - - if (__glibc_unlikely (!isfinite (z) || z == 0.0)) - { - if (isnan (z)) - { - if (!isnan (x) && !isnan (fn)) - __set_errno (EDOM); - } - else if (isinf (z)) - { - if (!isinf (x) && !isinf (fn)) - __set_errno (ERANGE); - } - else - { - /* z == 0. */ - if (x != 0.0 && !isinf (fn)) - __set_errno (ERANGE); - } - } - return z; - } -} -weak_alias (__scalb, scalb) -#ifdef NO_LONG_DOUBLE -strong_alias (__scalb, __scalbl) -weak_alias (__scalb, scalbl) -#endif |