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authordds <dds@FreeBSD.org>2007-05-22 05:52:04 +0000
committerdds <dds@FreeBSD.org>2007-05-22 05:52:04 +0000
commit3fe54a38365ecc8c9db5e7cc3f8acc74c94c344b (patch)
tree26273dd99d221c1e98383dcdc48be78a8b891660 /tools
parent50945671cb9d2a10612f439bcfe767f7c443ea1d (diff)
downloadFreeBSD-src-3fe54a38365ecc8c9db5e7cc3f8acc74c94c344b.zip
FreeBSD-src-3fe54a38365ecc8c9db5e7cc3f8acc74c94c344b.tar.gz
Test the integer-arithmetic float conversions encode_timeval and encode_long
in kern_acct.c.
Diffstat (limited to 'tools')
-rw-r--r--tools/regression/acct/Makefile22
-rw-r--r--tools/regression/acct/pack.c105
-rw-r--r--tools/regression/acct/regress.t30
3 files changed, 157 insertions, 0 deletions
diff --git a/tools/regression/acct/Makefile b/tools/regression/acct/Makefile
new file mode 100644
index 0000000..6834fcb
--- /dev/null
+++ b/tools/regression/acct/Makefile
@@ -0,0 +1,22 @@
+#
+# $FreeBSD$
+#
+# "make" will compile what is needed and run the regression tests.
+#
+PROG= pack
+NO_MAN=
+
+all: regress
+
+pack: pack.c convert.c
+
+convert.c: ../../../sys/kern/kern_acct.c
+ sed -n '/FLOAT_CONVERSION_START/,/FLOAT_CONVERSION_END/p' $? >$@
+
+regress: pack regress.t
+ ./regress.t
+
+clean:
+ rm -f $(PROG) convert.c
+
+.include <bsd.prog.mk>
diff --git a/tools/regression/acct/pack.c b/tools/regression/acct/pack.c
new file mode 100644
index 0000000..122b623
--- /dev/null
+++ b/tools/regression/acct/pack.c
@@ -0,0 +1,105 @@
+/*-
+ * Copyright (c) 2007 Diomidis Spinellis. All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <assert.h>
+#include <float.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+
+#include <sys/time.h>
+#include <sys/types.h>
+
+#define KASSERT(val, msg) assert(val)
+
+typedef u_int32_t comp_t;
+
+#define AHZ 1000000
+
+#include "convert.c"
+
+static int nerr;
+
+union cf {
+ comp_t c;
+ float f;
+};
+
+static void
+check_result(const char *name, float expected, union cf v)
+{
+ double eps;
+
+ eps = fabs(expected - v.f) / expected;
+ if (eps > FLT_EPSILON) {
+ printf("Error in %s\n", name);
+ printf("Got 0x%08x %12g\n", v.c, v.f);
+ v.f = expected;
+ printf("Expected 0x%08x %12g (%.15lg)\n", v.c, v.f, expected);
+ printf("Epsilon=%lg, rather than %g\n", eps, FLT_EPSILON);
+ nerr++;
+ }
+}
+
+int
+main(int argc, char *argv[])
+{
+ union cf v;
+ long l;
+ int i, end;
+ struct timeval tv;
+
+ if (argc == 2) {
+ /* Loop test */
+ end = atoi(argv[1]);
+ for (i = 0; i < end; i++) {
+ tv.tv_sec = random();
+ tv.tv_usec = (random() % 1000000);
+ v.c = encode_timeval(tv);
+ check_result("encode_timeval",
+ (float)tv.tv_sec * AHZ + tv.tv_usec, v);
+ l = random();
+ v.c = encode_long(l);
+ check_result("encode_long", l, v);
+ }
+ } else if (argc == 3) {
+ /* Single-value timeval/long test */
+ tv.tv_sec = atol(argv[1]);
+ tv.tv_usec = atol(argv[2]);
+ v.c = encode_timeval(tv);
+ check_result("encode_timeval",
+ (float)tv.tv_sec * AHZ + tv.tv_usec, v);
+ v.c = encode_long(tv.tv_sec);
+ check_result("encode_long", tv.tv_sec, v);
+ } else {
+ fprintf(stderr, "usage:\n%s repetitions\n%s sec usec\n",
+ argv[0], argv[0]);
+ return (1);
+ }
+ return (nerr);
+}
diff --git a/tools/regression/acct/regress.t b/tools/regression/acct/regress.t
new file mode 100644
index 0000000..c078caa
--- /dev/null
+++ b/tools/regression/acct/regress.t
@@ -0,0 +1,30 @@
+#!/bin/sh
+#
+# $FreeBSD$
+#
+
+DIR=`dirname $0`
+
+check()
+{
+ NUM=$1
+ shift
+ if $DIR/pack $*
+ then
+ echo "ok $NUM"
+ else
+ echo "not ok $NUM"
+ fi
+}
+
+echo 1..7
+
+check 1 0 0
+check 2 0 1
+check 3 1 0
+check 4 1 999999
+check 5 1 1000000
+check 6 2147483647 999999
+check 7 10000000
+
+exit 0
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