1/* Copyright (C) 2011-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <math.h>
19#include <math_private.h>
20#include <math-svid-compat.h>
21
22#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_27)
23/* wrapper expf */
24float
25__expf_compat (float x)
26{
27 float z = __ieee754_expf (x);
28 if (__builtin_expect (!isfinite (z) || z == 0, 0)
29 && isfinite (x) && _LIB_VERSION != _IEEE_)
30 return __kernel_standard_f (x, x, 106 + !!signbit (x));
31
32 return z;
33}
34compat_symbol (libm, __expf_compat, expf, GLIBC_2_0);
35#endif
36