mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
/* Canonicalize floating-point representation.
|
|
Copyright (C) 2016-2024 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/>. */
|
|
|
|
#include <math.h>
|
|
|
|
int
|
|
M_DECL_FUNC (__canonicalize) (FLOAT *cx, const FLOAT *x)
|
|
{
|
|
FLOAT val = *x;
|
|
/* For all binary formats supported by glibc, iscanonical only fails
|
|
if the representation is not a valid representation of the type,
|
|
so the only work to do is for signaling NaNs. */
|
|
if (!iscanonical (val))
|
|
return 1;
|
|
if (issignaling (val))
|
|
*cx = val + val;
|
|
else
|
|
*cx = val;
|
|
return 0;
|
|
}
|
|
|
|
declare_mgen_alias (__canonicalize, canonicalize)
|