aboutsummaryrefslogtreecommitdiff
blob: 46fe85c972237a8319832b3b3c85fc677a9038fb (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
44
45
46
47
48
/* Wrapper to set errno for lgamma_r.
   Copyright (C) 2017-2020 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_DECL_FUNC_R_X(x) x ## _r
#define M_DECL_FUNC_R_S(x) M_DECL_FUNC_R_X (x)
#define M_DECL_FUNC_R(x) M_DECL_FUNC_R_S (M_SUF (x))

#define M_CALL_FUNC_R_X(x) x ## _r
#define M_CALL_FUNC_R_S(x) M_CALL_FUNC_R_X (x)
#define M_CALL_FUNC_R(x) M_CALL_FUNC_R_S (M_SUF (x))

FLOAT
M_DECL_FUNC_R (__lgamma) (FLOAT x, int *signgamp)
{
  FLOAT y = M_CALL_FUNC_R (__ieee754_lgamma) (x, signgamp);
  if (__glibc_unlikely (!isfinite (y)) && isfinite (x))
    /* Pole error: lgamma_r(integer x<0).  Or overflow.  */
    __set_errno (ERANGE);
  return y;
}
declare_mgen_alias_r (__lgamma, lgamma)

#endif /* __USE_WRAPPER_TEMPLATE.  */