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/* isnan(). LoongArch version.
Copyright (C) 2022-2023 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>
#include <fenv_private.h>
int
__isnan (double x)
{
int x_cond;
asm volatile ("fclass.d \t%0, %1" : "=f" (x_cond) : "f" (x));
return (x_cond & _FCLASS_NAN) != 0;
}
hidden_def (__isnan)
weak_alias (__isnan, isnan)
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