sysdeps/hppa/fpu/fegetenv.c

   1 /* Store current floating-point environment.
   2    Copyright (C) 2000-2023 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 <fenv.h>
  20 #include <string.h>
  21
  22 int
  23 __fegetenv (fenv_t *envp)
  24 {
  25   unsigned long long buf[4], *bufptr = buf;
  26
  27   __asm__ (
  28            "fstd,ma %%fr0,8(%1) \n\t"
  29            "fldd -8(%1),%%fr0   \n\t"
  30            : "=m" (buf), "+r" (bufptr) : : "%r0");
  31   memcpy(envp, buf, sizeof (*envp));
  32   return 0;
  33 }
  34 libm_hidden_def (__fegetenv)
  35 weak_alias (__fegetenv, fegetenv)
  36 libm_hidden_weak (fegetenv)