[thirdparty/glibc.git] / sysdeps / riscv / rvd / s_fmax.c

/* fmax().  RISC-V version.
   Copyright (C) 2017-2024 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>
#include <fenv_private.h>
#include <libm-alias-double.h>

double
__fmax (double x, double y)
{
  double res;

  if (__glibc_unlikely ((_FCLASS (x) | _FCLASS (y)) & _FCLASS_SNAN))
    return x + y;
  else
    asm ("fmax.d %0, %1, %2" : "=f" (res) : "f" (x), "f" (y));

  return res;
}
libm_alias_double (__fmax, fmax)
Commit	Line	Data
b2cb5e02	1	/* fmax(). RISC-V version.
dff8da6b	2	Copyright (C) 2017-2024 Free Software Foundation, Inc.
b2cb5e02 PD	3	This file is part of the GNU C Library.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with the GNU C Library. If not, see
5a82c748	17	<https://www.gnu.org/licenses/>. */
b2cb5e02 PD	18
b2cb5e02 PD	19	#include <math.h>
70e2ba33	20	#include <fenv_private.h>
b2cb5e02 PD	21	#include <libm-alias-double.h>
	22
	23	double
	24	__fmax (double x, double y)
	25	{
fdcc6253 AW	26	double res;
	27
	28	if (__glibc_unlikely ((_FCLASS (x) \| _FCLASS (y)) & _FCLASS_SNAN))
	29	return x + y;
	30	else
	31	asm ("fmax.d %0, %1, %2" : "=f" (res) : "f" (x), "f" (y));
	32
	33	return res;
b2cb5e02 PD	34	}
b2cb5e02 PD	35	libm_alias_double (__fmax, fmax)