xref: /freebsd/tools/test/stress2/misc/fpu.sh (revision 643ac419fafba89f5adda0e0ea75b538727453fb)
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
29# Regression test for FPU changes in r208833
30
31. ../default.cfg
32
33here=`pwd`
34cd /tmp
35sed '1,/^EOF/d' < $here/$0 > fpu.c
36mycc -o fpu -Wall -O2 fpu.c
37rm -f fpu.c
38[ -d $RUNDIR ] || mkdir -p $RUNDIR
39cd $RUNDIR
40
41r=`/tmp/fpu`
42[ "$r" = "-0.000000017, 0.000000000, 0.000000000" ] || echo $r
43
44cd $here
45rm -f /tmp/fpu
46
47exit 0
48EOF
49#include <sys/types.h>
50#include <signal.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <sys/wait.h>
54#include <unistd.h>
55
56void
57handler(int i)
58{
59}
60
61void
62test()
63{
64	float val = 0;
65	double lval = 0;
66	long double llval = 0;
67	int i, j;
68
69	for (i = 0; i < 100000; i++) {
70		for (j = 0; j < 100000; j++) {
71			val   = val   + 0.00001;
72			lval  = lval  + 0.00001;
73			llval = llval + 0.00001;
74		}
75		for (j = 0; j < 100000; j++) {
76			val   = val   - 0.00001;
77			lval  = lval  - 0.00001;
78			llval = llval - 0.00001;
79		}
80	}
81	printf("%.9f, %.9f, %.9Lf\n", val, lval, llval);
82	exit(0);
83
84}
85
86int
87main()
88{
89	pid_t pid;
90	int i;
91
92	signal(SIGHUP, handler);
93
94	if ((pid = fork()) == 0)
95		test();
96
97	for (i = 0; i < 10000; i++)
98		kill(pid, SIGHUP);
99
100	wait(NULL);
101
102	return (0);
103}
104