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/* Canonicalize floating-point representation.
Copyright (C) 2016-2017 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
<http://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)
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