File: w_scalbln_template.c

package info (click to toggle)
glibc 2.41-10
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 300,192 kB
  • sloc: ansic: 1,050,471; asm: 238,243; makefile: 20,378; python: 13,537; sh: 11,823; cpp: 5,197; awk: 1,795; perl: 317; yacc: 292; pascal: 182; sed: 19
file content (36 lines) | stat: -rw-r--r-- 1,130 bytes parent folder | download | duplicates (4)
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
/* Wrapper for __scalbln handles setting errno.
   Copyright (C) 2014-2025 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/>.  */

#include <errno.h>
#include <math.h>

FLOAT
M_DECL_FUNC (__w_scalbln) (FLOAT x, long int n)
{
  if (!isfinite (x) || x == 0)
    return x + x;

  x = M_SUF (__scalbln) (x, n);

  if (!isfinite (x) || x == 0)
    __set_errno (ERANGE);

  return x;
}

declare_mgen_alias (__w_scalbln, scalbln)