From f67d78192c1be9d56d3a6f3fda4e0a70ae48c44d Mon Sep 17 00:00:00 2001 From: "Gabriel F. T. Gomes" Date: Tue, 13 Dec 2016 22:42:51 -0200 Subject: Move wrappers to libm-compat-calls-auto This commit moves one step towards the deprecation of wrappers that use _LIB_VERSION / matherr / __kernel_standard functionality, by adding the suffix '_compat' to their filenames and adjusting Makefiles and #includes accordingly. New template wrappers that do not use such functionality will be added by future patches and will be first used by the float128 wrappers. --- math/w_log2l_compat.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 math/w_log2l_compat.c (limited to 'math/w_log2l_compat.c') diff --git a/math/w_log2l_compat.c b/math/w_log2l_compat.c new file mode 100644 index 0000000000..3d9994e055 --- /dev/null +++ b/math/w_log2l_compat.c @@ -0,0 +1,44 @@ +/* Copyright (C) 2011-2017 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 + . */ + +#include +#include +#include + + +/* wrapper log2l(x) */ +long double +__log2l (long double x) +{ + if (__builtin_expect (islessequal (x, 0.0L), 0) && _LIB_VERSION != _IEEE_) + { + if (x == 0.0L) + { + feraiseexcept (FE_DIVBYZERO); + return __kernel_standard_l (x, x, 248); /* log2(0) */ + } + else + { + feraiseexcept (FE_INVALID); + return __kernel_standard_l (x, x, 249); /* log2(x<0) */ + } + } + + return __ieee754_log2l (x); +} +weak_alias (__log2l, log2l) -- cgit 1.4.1