blob: 9a274983a11ca0664cfe7998811c0d406fdf491e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/* Wrapper to set errno for lgamma.
Copyright (C) 2017-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
/* Only build wrappers from the templates for the types that define the macro
below. This macro is set in math-type-macros-<type>.h in sysdeps/generic
for each floating-point type. */
#if __USE_WRAPPER_TEMPLATE
# include <errno.h>
# include <fenv.h>
# include <math.h>
# include <math_private.h>
#define M_CALL_FUNC_X(x) x ## _r
#define M_CALL_FUNC(x) M_CALL_FUNC_X (x)
FLOAT
M_DECL_FUNC (__lgamma) (FLOAT x)
{
FLOAT y = M_CALL_FUNC (M_SUF (__ieee754_lgamma)) (x, &__signgam);
if (__glibc_unlikely (!isfinite (y)) && isfinite (x))
/* Pole error: lgamma(integer x<0). Or overflow. */
__set_errno (ERANGE);
return y;
}
declare_mgen_alias (__lgamma, lgamma)
#endif /* __USE_WRAPPER_TEMPLATE. */
|
