Author: das
Date: Fri Dec 3 00:44:31 2010
New Revision: 216139
URL: http://svn.freebsd.org/changeset/base/216139
Log:
Add some basic regression tests for nearbyint().
Added:
head/tools/regression/lib/msun/test-nearbyint.c (contents, props changed)
head/tools/regression/lib/msun/test-nearbyint.t (contents, props changed)
Modified:
head/tools/regression/lib/msun/Makefile
Modified: head/tools/regression/lib/msun/Makefile
==============================================================================
--- head/tools/regression/lib/msun/Makefile Fri Dec 3 00:44:07 2010
(r216138)
+++ head/tools/regression/lib/msun/Makefile Fri Dec 3 00:44:31 2010
(r216139)
@@ -2,7 +2,7 @@
TESTS= test-conj test-csqrt test-exponential test-fenv test-fma \
test-fmaxmin test-ilogb test-invtrig test-lrint \
- test-lround test-nan test-next test-rem test-trig
+ test-lround test-nan test-nearbyint test-next test-rem test-trig
CFLAGS+= -O0 -lm
.PHONY: tests
Added: head/tools/regression/lib/msun/test-nearbyint.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/tools/regression/lib/msun/test-nearbyint.c Fri Dec 3 00:44:31
2010 (r216139)
@@ -0,0 +1,100 @@
+/*-
+ * Copyright (c) 2010 David Schultz <d...@freebsd.org>
+ * 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 THE 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 THE 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.
+ */
+
+/*
+ * Tests for nearbyint{,f,l}()
+ *
+ * TODO:
+ * - adapt tests for rint(3)
+ * - tests for harder values (more mantissa bits than float)
+ * - tests in other rounding modes
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <assert.h>
+#include <fenv.h>
+#include <math.h>
+#include <stdio.h>
+
+#define ALL_STD_EXCEPT (FE_DIVBYZERO | FE_INEXACT | FE_INVALID | \
+ FE_OVERFLOW | FE_UNDERFLOW)
+
+/*
+ * Compare d1 and d2 using special rules: NaN == NaN and +0 != -0.
+ * Fail an assertion if they differ.
+ */
+static int
+fpequal(long double d1, long double d2)
+{
+
+ if (d1 != d2)
+ return (isnan(d1) && isnan(d2));
+ return (copysignl(1.0, d1) == copysignl(1.0, d2));
+}
+
+static void testit(int testnum, float in, float out)
+{
+
+ feclearexcept(ALL_STD_EXCEPT);
+ assert(fpequal(out, nearbyintf(in)));
+ assert(fpequal(-out, nearbyintf(-in)));
+ assert(fetestexcept(ALL_STD_EXCEPT) == 0);
+
+ assert(fpequal(out, nearbyint(in)));
+ assert(fpequal(-out, nearbyint(-in)));
+ assert(fetestexcept(ALL_STD_EXCEPT) == 0);
+
+ assert(fpequal(out, nearbyintl(in)));
+ assert(fpequal(-out, nearbyintl(-in)));
+ assert(fetestexcept(ALL_STD_EXCEPT) == 0);
+
+ printf("ok %d\t\t# nearbyint(%g)\n", testnum, in);
+}
+
+static const float tests[] = {
+/* input output (expected) */
+ 0.0, 0.0,
+ 0.5, 0.0,
+ M_PI, 3,
+ 65536.5, 65536,
+ INFINITY, INFINITY,
+ NAN, NAN,
+};
+
+int
+main(int argc, char *argv[])
+{
+ static const int ntests = sizeof(tests) / sizeof(tests[0]) / 2;
+ int i;
+
+ printf("1..%d\n", ntests);
+ for (i = 0; i < ntests; i++)
+ testit(i + 1, tests[i * 2], tests[i * 2 + 1]);
+
+ return (0);
+}
Added: head/tools/regression/lib/msun/test-nearbyint.t
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/tools/regression/lib/msun/test-nearbyint.t Fri Dec 3 00:44:31
2010 (r216139)
@@ -0,0 +1,10 @@
+#!/bin/sh
+# $FreeBSD$
+
+cd `dirname $0`
+
+executable=`basename $0 .t`
+
+make $executable 2>&1 > /dev/null
+
+exec ./$executable
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