LXR uboot/post/lib_ppc/fpu/980619-1.c

   1/*
   2 * Copyright (C) 2007
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23/*
  24 * This file is originally a part of the GCC testsuite.
  25 */
  26
  27#include <common.h>
  28
  29#include <post.h>
  30
  31#if CONFIG_POST & CONFIG_SYS_POST_FPU
  32
  33GNU_FPOST_ATTR
  34
  35int fpu_post_test_math4 (void)
  36{
  37        volatile float reale = 1.0f;
  38        volatile float oneplus;
  39        int i;
  40
  41        if (sizeof (float) != 4)
  42                return 0;
  43
  44        for (i = 0; ; i++)
  45        {
  46                oneplus = 1.0f + reale;
  47                if (oneplus == 1.0f)
  48                        break;
  49                reale = reale / 2.0f;
  50        }
  51        /* Assumes ieee754 accurate arithmetic above.  */
  52        if (i != 24) {
  53                post_log ("Error in FPU math4 test\n");
  54                return -1;
  55        }
  56        return 0;
  57}
  58
  59#endif /* CONFIG_POST & CONFIG_SYS_POST_FPU */
  60