sysdeps/alpha/fpu/s_lround.c

   1 /* Copyright (C) 2007-2021 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library.  If not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #define __llround       not___llround
  19 #define llround         not_llround
  20 #include <math.h>
  21 #include <math_ldbl_opt.h>
  22 #include <libm-alias-double.h>
  23 #undef __llround
  24 #undef llround
  25
  26 long int
  27 __lround (double x)
  28 {
  29   double adj, y;
  30
  31   adj = copysign (0.5, x);
  32   asm("addt/suc %1,%2,%0" : "=&f"(y) : "f"(x), "f"(adj));
  33   return y;
  34 }
  35
  36 strong_alias (__lround, __llround)
  37 libm_alias_double (__lround, lround)
  38 libm_alias_double (__llround, llround)