test/stress/stress2/misc/fpu.sh

   1 #!/bin/sh
   2
   3 #
   4 # Copyright (c) 2010 Peter Holm <pho@FreeBSD.org>
   5 # All rights reserved.
   6 #
   7 # Redistribution and use in source and binary forms, with or without
   8 # modification, are permitted provided that the following conditions
   9 # are met:
  10 # 1. Redistributions of source code must retain the above copyright
  11 #    notice, this list of conditions and the following disclaimer.
  12 # 2. Redistributions in binary form must reproduce the above copyright
  13 #    notice, this list of conditions and the following disclaimer in the
  14 #    documentation and/or other materials provided with the distribution.
  15 #
  16 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26 # SUCH DAMAGE.
  27 #
  28 # $FreeBSD$
  29 #
  30
  31 # Regression test for FPU changes in r208833
  32
  33 . ../default.cfg
  34
  35 here=`pwd`
  36 cd /tmp
  37 sed '1,/^EOF/d' < $here/$0 > fpu.c
  38 cc -o fpu -Wall -O2 fpu.c
  39 rm -f fpu.c
  40 [ -d $RUNDIR ] || mkdir -p $RUNDIR
  41 cd $RUNDIR
  42
  43 r=`/tmp/fpu`
  44 [ "$r" = "-0.000000017, 0.000000000, 0.000000000" ] || echo $r
  45
  46 cd $here
  47 rm -f /tmp/fpu
  48
  49 exit 0
  50 EOF
  51 #include <sys/types.h>
  52 #include <signal.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <sys/wait.h>
  56 #include <unistd.h>
  57
  58 void
  59 handler(int i)
  60 {
  61 }
  62
  63 void
  64 test()
  65 {
  66         float val = 0;
  67         double lval = 0;
  68         long double llval = 0;
  69         int i, j;
  70
  71         for (i = 0; i < 100000; i++) {
  72                 for (j = 0; j < 100000; j++) {
  73                         val   = val   + 0.00001;
  74                         lval  = lval  + 0.00001;
  75                         llval = llval + 0.00001;
  76                 }
  77                 for (j = 0; j < 100000; j++) {
  78                         val   = val   - 0.00001;
  79                         lval  = lval  - 0.00001;
  80                         llval = llval - 0.00001;
  81                 }
  82         }
  83         printf("%.9f, %.9f, %.9Lf\n", val, lval, llval);
  84         exit(0);
  85
  86 }
  87
  88 int
  89 main()
  90 {
  91         pid_t pid;
  92         int i;
  93
  94         signal(SIGHUP, handler);
  95
  96         if ((pid = fork()) == 0)
  97                 test();
  98
  99         for (i = 0; i < 10000; i++)
 100                 kill(pid, SIGHUP);
 101
 102         wait(NULL);
 103
 104         return (0);
 105 }