sysdeps/aarch64/fpu/s_roundeven.c

   1 /* Copyright (C) 2021-2022 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #define NO_MATH_REDIRECT
  20 #include <math.h>
  21 #include <libm-alias-double.h>
  22
  23 double
  24 __roundeven (double x)
  25 {
  26   asm volatile ("frintn \t%d0, %d1" : "=w" (x) : "w" (x));
  27   return x;
  28 }
  29 libm_alias_double (__roundeven, roundeven)