mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 22:40:05 +00:00
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/* Fix for conversion of float NAN to double. RISC-V 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/>. */
|
|
|
|
#ifndef FIX_FLOAT_DOUBLE_CONVERT_NAN_H
|
|
#define FIX_FLOAT_DOUBLE_CONVERT_NAN_H
|
|
|
|
#include <math.h>
|
|
|
|
/* RISC-V rvd instructions do not preserve the signbit of NAN
|
|
when converting from float to double. */
|
|
static inline double
|
|
keep_sign_conversion (float flt)
|
|
{
|
|
if (__glibc_unlikely (isnan (flt)))
|
|
{
|
|
float x = copysignf (1.f, flt);
|
|
return copysign ((double) flt, (double) x);
|
|
}
|
|
return flt;
|
|
}
|
|
|
|
#endif
|