sysdeps/x86/fpu/test-fenv-clear-sse.c

   1 /* Test fesetenv (FE_DFL_ENV) and fesetenv (FE_NOMASK_ENV) clear
   2    exceptions (bug 19181).  SSE version.
   3    Copyright (C) 2015-2020 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <cpuid.h>
  21 #include <stdbool.h>
  22
  23 static bool
  24 have_sse2 (void)
  25 {
  26   unsigned int eax, ebx, ecx, edx;
  27
  28   if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
  29     return false;
  30
  31   return (edx & bit_SSE2) != 0;
  32 }
  33
  34 #define CHECK_CAN_TEST                                          \
  35   do                                                            \
  36     {                                                           \
  37       if (!have_sse2 ())                                        \
  38         {                                                       \
  39           puts ("CPU does not support SSE2, cannot test");      \
  40           return 0;                                             \
  41         }                                                       \
  42     }                                                           \
  43   while (0)
  44
  45 #include <test-fenv-clear-main.c>