1/* Wrapper for __log1p that handles setting errno.
2 Copyright (C) 2015-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <math.h>
21
22FLOAT
23M_DECL_FUNC (__w_log1p) (FLOAT x)
24{
25 if (__glibc_unlikely (islessequal (x, M_LIT (-1.0))))
26 {
27 if (x == -1)
28 __set_errno (ERANGE);
29 else
30 __set_errno (EDOM);
31 }
32
33 return M_SUF (__log1p) (x);
34}
35declare_mgen_alias (__w_log1p, log1p)
36

source code of glibc/math/w_log1p_template.c