1  /* fmaxf().  RISC-V version.
       2     Copyright (C) 2017-2023 Free Software Foundation, Inc.
       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
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <math.h>
      20  #include <fenv_private.h>
      21  #include <libm-alias-float.h>
      22  
      23  float
      24  __fmaxf (float x, float y)
      25  {
      26    float res;
      27  
      28    if (__glibc_unlikely ((_FCLASS (x) | _FCLASS (y)) & _FCLASS_SNAN))
      29      return x + y;
      30    else
      31      asm ("fmax.s %0, %1, %2" : "=f" (res) : "f" (x), "f" (y));
      32  
      33    return res;
      34  }
      35  libm_alias_float (__fmax, fmax)