sysdeps/aarch64/fpu/s_fma.c

   1 /* Copyright (C) 1996-2017 Free Software Foundation, Inc.
   2
   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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <math.h>
  20
  21 #ifndef FUNC
  22 # define FUNC fma
  23 #endif
  24
  25 #ifndef TYPE
  26 # define TYPE double
  27 # define REGS "d"
  28 #else
  29 # ifndef REGS
  30 #  error REGS not defined
  31 # endif
  32 #endif
  33
  34 #define __CONCATX(a,b) __CONCAT(a,b)
  35
  36 TYPE
  37 __CONCATX(__,FUNC) (TYPE x, TYPE y, TYPE z)
  38 {
  39   TYPE result;
  40   asm ( "fmadd" "\t%" REGS "0, %" REGS "1, %" REGS "2, %" REGS "3"
  41         : "=w" (result) : "w" (x), "w" (y), "w" (z) );
  42   return result;
  43 }
  44
  45 weak_alias (__CONCATX(__,FUNC), FUNC)