Module Name:    src
Committed By:   jruoho
Date:           Wed Sep 14 05:18:19 UTC 2011

Modified Files:
        src/distrib/sets/lists/tests: mi
        src/tests/lib/libm: Makefile
Added Files:
        src/tests/lib/libm: t_cos.c t_sin.c t_tan.c

Log Message:
Some tests for sine, cosine, and tangent.


To generate a diff of this commit:
cvs rdiff -u -r1.384 -r1.385 src/distrib/sets/lists/tests/mi
cvs rdiff -u -r1.8 -r1.9 src/tests/lib/libm/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/lib/libm/t_cos.c src/tests/lib/libm/t_sin.c \
    src/tests/lib/libm/t_tan.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/distrib/sets/lists/tests/mi
diff -u src/distrib/sets/lists/tests/mi:1.384 src/distrib/sets/lists/tests/mi:1.385
--- src/distrib/sets/lists/tests/mi:1.384	Mon Sep 12 16:48:48 2011
+++ src/distrib/sets/lists/tests/mi	Wed Sep 14 05:18:18 2011
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.384 2011/09/12 16:48:48 jruoho Exp $
+# $NetBSD: mi,v 1.385 2011/09/14 05:18:18 jruoho Exp $
 #
 # Note: don't delete entries from here - mark them as "obsolete" instead.
 #
@@ -547,6 +547,7 @@
 ./usr/libdata/debug/usr/tests/lib/libevent/h_event.debug		tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libm					tests-lib-debug
 ./usr/libdata/debug/usr/tests/lib/libm/t_ceil.debug			tests-lib-debug		debug,atf
+./usr/libdata/debug/usr/tests/lib/libm/t_cos.debug			tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libm/t_floor.debug			tests-obsolete		obsolete
 ./usr/libdata/debug/usr/tests/lib/libm/t_infinity.debug			tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libm/t_ldexp.debug			tests-lib-debug		debug,atf
@@ -554,6 +555,8 @@
 ./usr/libdata/debug/usr/tests/lib/libm/t_libm.debug			tests-obsolete		obsolete
 ./usr/libdata/debug/usr/tests/lib/libm/t_round.debug			tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libm/t_scalbn.debug			tests-lib-debug		debug,atf
+./usr/libdata/debug/usr/tests/lib/libm/t_sin.debug			tests-lib-debug		debug,atf
+./usr/libdata/debug/usr/tests/lib/libm/t_tan.debug			tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libm/t_tanh.debug			tests-lib-debug		debug,atf
 ./usr/libdata/debug/usr/tests/lib/libobjc				tests-lib-debug
 ./usr/libdata/debug/usr/tests/lib/libobjc/t_threads.debug		tests-lib-debug		debug,atf
@@ -2253,6 +2256,7 @@
 ./usr/tests/lib/libm				tests-lib-tests		atf
 ./usr/tests/lib/libm/Atffile			tests-lib-tests		atf
 ./usr/tests/lib/libm/t_ceil			tests-lib-tests		atf
+./usr/tests/lib/libm/t_cos			tests-lib-tests		atf
 ./usr/tests/lib/libm/t_floor			tests-obsolete		obsolete
 ./usr/tests/lib/libm/t_infinity			tests-lib-tests		atf
 ./usr/tests/lib/libm/t_ldexp			tests-lib-tests		atf
@@ -2260,6 +2264,8 @@
 ./usr/tests/lib/libm/t_libm			tests-obsolete		obsolete
 ./usr/tests/lib/libm/t_round			tests-lib-tests		atf
 ./usr/tests/lib/libm/t_scalbn			tests-lib-tests		atf
+./usr/tests/lib/libm/t_sin			tests-lib-tests		atf
+./usr/tests/lib/libm/t_tan			tests-lib-tests		atf
 ./usr/tests/lib/libm/t_tanh			tests-lib-tests		atf
 ./usr/tests/lib/libobjc				tests-lib-tests		atf
 ./usr/tests/lib/libobjc/Atffile			tests-lib-tests		atf

Index: src/tests/lib/libm/Makefile
diff -u src/tests/lib/libm/Makefile:1.8 src/tests/lib/libm/Makefile:1.9
--- src/tests/lib/libm/Makefile:1.8	Mon Sep 12 16:48:48 2011
+++ src/tests/lib/libm/Makefile	Wed Sep 14 05:18:19 2011
@@ -1,15 +1,18 @@
-# $NetBSD: Makefile,v 1.8 2011/09/12 16:48:48 jruoho Exp $
+# $NetBSD: Makefile,v 1.9 2011/09/14 05:18:19 jruoho Exp $
 
 .include <bsd.own.mk>
 
 TESTSDIR=	${TESTSBASE}/lib/libm
 
 TESTS_C+=	t_ceil
+TESTS_C+=	t_cos
 TESTS_C+=	t_infinity
 TESTS_C+=	t_ldexp
 TESTS_C+=	t_log
 TESTS_C+=	t_round
 TESTS_C+=	t_scalbn
+TESTS_C+=	t_sin
+TESTS_C+=	t_tan
 TESTS_C+=	t_tanh
 
 LDADD+=		-lm

Added files:

Index: src/tests/lib/libm/t_cos.c
diff -u /dev/null src/tests/lib/libm/t_cos.c:1.1
--- /dev/null	Wed Sep 14 05:18:19 2011
+++ src/tests/lib/libm/t_cos.c	Wed Sep 14 05:18:19 2011
@@ -0,0 +1,277 @@
+/* $NetBSD: t_cos.c,v 1.1 2011/09/14 05:18:19 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <atf-c.h>
+#include <math.h>
+
+static const struct {
+	int		angle;
+	double		x;
+	double		y;
+} angles[] = {
+	{ -180, -3.141592653589793, -1.0000000000000000 },
+	{ -135, -2.356194490192345, -0.7071067811865476 },
+	{  -90, -1.570796326794897,  0.0000000000000000 },
+	{  -45, -0.785398163397448,  0.7071067811865476 },
+	{    0,  0.000000000000000,  1.0000000000000000 },
+	{   30,  0.523598775598299,  0.8660254037844386 },
+	{   45,  0.785398163397448,  0.7071067811865476 },
+	{   60,  1.047197551196598,  0.5000000000000000 },
+	{   90,  1.570796326794897,  0.0000000000000000 },
+	{  120,  2.094395102393195, -0.5000000000000000 },
+	{  135,  2.356194490192345, -0.7071067811865476 },
+	{  150,  2.617993877991494, -0.8660254037844386 },
+	{  180,  3.141592653589793, -1.0000000000000000 },
+	{  270,  4.712388980384690,  0.0000000000000000 },
+	{  360,  6.283185307179586,  1.0000000000000000 }
+};
+
+/*
+ * cos(3)
+ */
+ATF_TC(cos_angles);
+ATF_TC_HEAD(cos_angles, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test some selected angles");
+}
+
+ATF_TC_BODY(cos_angles, tc)
+{
+	const double eps = 1.0e-15;
+	size_t i;
+
+	for (i = 0; i < __arraycount(angles); i++) {
+
+		if (fabs(cos(angles[i].x) - angles[i].y) > eps)
+			atf_tc_fail_nonfatal("cos(%d deg) != %0.01f",
+			    angles[i].angle, angles[i].y);
+	}
+}
+
+ATF_TC(cos_nan);
+ATF_TC_HEAD(cos_nan, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cos(NaN) == NaN");
+}
+
+ATF_TC_BODY(cos_nan, tc)
+{
+#ifndef __vax__
+	const double x = 0.0L / 0.0L;
+
+	ATF_CHECK(isnan(x) != 0);
+	ATF_CHECK(isnan(cos(x)) != 0);
+#endif
+}
+
+ATF_TC(cos_inf_neg);
+ATF_TC_HEAD(cos_inf_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cos(-Inf) == NaN");
+}
+
+ATF_TC_BODY(cos_inf_neg, tc)
+{
+#ifndef __vax__
+	const double x = -1.0L / 0.0L;
+
+	ATF_CHECK(isnan(cos(x)) != 0);
+#endif
+}
+
+ATF_TC(cos_inf_pos);
+ATF_TC_HEAD(cos_inf_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cos(+Inf) == NaN");
+}
+
+ATF_TC_BODY(cos_inf_pos, tc)
+{
+#ifndef __vax__
+	const double x = 1.0L / 0.0L;
+
+	ATF_CHECK(isnan(cos(x)) != 0);
+#endif
+}
+
+
+ATF_TC(cos_zero_neg);
+ATF_TC_HEAD(cos_zero_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cos(-0.0) == 1.0");
+}
+
+ATF_TC_BODY(cos_zero_neg, tc)
+{
+#ifndef __vax__
+	const double x = -0.0L;
+
+	ATF_CHECK(cos(x) == 1.0);
+#endif
+}
+
+ATF_TC(cos_zero_pos);
+ATF_TC_HEAD(cos_zero_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cos(+0.0) == 1.0");
+}
+
+ATF_TC_BODY(cos_zero_pos, tc)
+{
+#ifndef __vax__
+	const double x = 0.0L;
+
+	ATF_CHECK(cos(x) == 1.0);
+#endif
+}
+
+/*
+ * cosf(3)
+ */
+ATF_TC(cosf_angles);
+ATF_TC_HEAD(cosf_angles, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test some selected angles");
+}
+
+ATF_TC_BODY(cosf_angles, tc)
+{
+	const float eps = 1.0e-7;
+	float x, y;
+	size_t i;
+
+	for (i = 0; i < __arraycount(angles); i++) {
+
+		x = angles[i].x;
+		y = angles[i].y;
+
+		if (fabs(cosf(x) - y) > eps)
+			atf_tc_fail_nonfatal("cosf(%d deg) != %0.01f",
+			    angles[i].angle, angles[i].y);
+	}
+}
+
+ATF_TC(cosf_nan);
+ATF_TC_HEAD(cosf_nan, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cosf(NaN) == NaN");
+}
+
+ATF_TC_BODY(cosf_nan, tc)
+{
+#ifndef __vax__
+	const float x = 0.0L / 0.0L;
+
+	ATF_CHECK(isnan(x) != 0);
+	ATF_CHECK(isnan(cosf(x)) != 0);
+#endif
+}
+
+ATF_TC(cosf_inf_neg);
+ATF_TC_HEAD(cosf_inf_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cosf(-Inf) == NaN");
+}
+
+ATF_TC_BODY(cosf_inf_neg, tc)
+{
+#ifndef __vax__
+	const float x = -1.0L / 0.0L;
+
+	ATF_CHECK(isnan(cosf(x)) != 0);
+#endif
+}
+
+ATF_TC(cosf_inf_pos);
+ATF_TC_HEAD(cosf_inf_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cosf(+Inf) == NaN");
+}
+
+ATF_TC_BODY(cosf_inf_pos, tc)
+{
+#ifndef __vax__
+	const float x = 1.0L / 0.0L;
+
+	ATF_CHECK(isnan(cosf(x)) != 0);
+#endif
+}
+
+
+ATF_TC(cosf_zero_neg);
+ATF_TC_HEAD(cosf_zero_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cosf(-0.0) == 1.0");
+}
+
+ATF_TC_BODY(cosf_zero_neg, tc)
+{
+#ifndef __vax__
+	const float x = -0.0L;
+
+	ATF_CHECK(cosf(x) == 1.0);
+#endif
+}
+
+ATF_TC(cosf_zero_pos);
+ATF_TC_HEAD(cosf_zero_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test cosf(+0.0) == 1.0");
+}
+
+ATF_TC_BODY(cosf_zero_pos, tc)
+{
+#ifndef __vax__
+	const float x = 0.0L;
+
+	ATF_CHECK(cosf(x) == 1.0);
+#endif
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, cos_angles);
+	ATF_TP_ADD_TC(tp, cos_nan);
+	ATF_TP_ADD_TC(tp, cos_inf_neg);
+	ATF_TP_ADD_TC(tp, cos_inf_pos);
+	ATF_TP_ADD_TC(tp, cos_zero_neg);
+	ATF_TP_ADD_TC(tp, cos_zero_pos);
+
+	ATF_TP_ADD_TC(tp, cosf_angles);
+	ATF_TP_ADD_TC(tp, cosf_nan);
+	ATF_TP_ADD_TC(tp, cosf_inf_neg);
+	ATF_TP_ADD_TC(tp, cosf_inf_pos);
+	ATF_TP_ADD_TC(tp, cosf_zero_neg);
+	ATF_TP_ADD_TC(tp, cosf_zero_pos);
+
+	return atf_no_error();
+}
Index: src/tests/lib/libm/t_sin.c
diff -u /dev/null src/tests/lib/libm/t_sin.c:1.1
--- /dev/null	Wed Sep 14 05:18:19 2011
+++ src/tests/lib/libm/t_sin.c	Wed Sep 14 05:18:19 2011
@@ -0,0 +1,277 @@
+/* $NetBSD: t_sin.c,v 1.1 2011/09/14 05:18:19 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <atf-c.h>
+#include <math.h>
+
+static const struct {
+	int		angle;
+	double		x;
+	double		y;
+} angles[] = {
+	{ -180, -3.141592653589793,  0.0000000000000000 },
+	{ -135, -2.356194490192345, -0.7071067811865476 },
+	{  -90, -1.570796326794897, -1.0000000000000000 },
+	{  -45, -0.785398163397448, -0.7071067811865476 },
+	{    0,  0.000000000000000,  0.0000000000000000 },
+	{   30,  0.523598775598299,  0.5000000000000000 },
+	{   45,  0.785398163397448,  0.7071067811865476 },
+	{   60,  1.047197551196598,  0.8660254037844386 },
+	{   90,  1.570796326794897,  1.0000000000000000 },
+	{  120,  2.094395102393195,  0.8660254037844386 },
+	{  135,  2.356194490192345,  0.7071067811865476 },
+	{  150,  2.617993877991494,  0.5000000000000000 },
+	{  180,  3.141592653589793,  0.0000000000000000 },
+	{  270,  4.712388980384690, -1.0000000000000000 },
+	{  360,  6.283185307179586,  0.0000000000000000 }
+};
+
+/*
+ * sin(3)
+ */
+ATF_TC(sin_angles);
+ATF_TC_HEAD(sin_angles, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test some selected angles");
+}
+
+ATF_TC_BODY(sin_angles, tc)
+{
+	const double eps = 1.0e-15;
+	size_t i;
+
+	for (i = 0; i < __arraycount(angles); i++) {
+
+		if (fabs(sin(angles[i].x) - angles[i].y) > eps)
+			atf_tc_fail_nonfatal("sin(%d deg) != %0.01f",
+			    angles[i].angle, angles[i].y);
+	}
+}
+
+ATF_TC(sin_nan);
+ATF_TC_HEAD(sin_nan, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sin(NaN) == NaN");
+}
+
+ATF_TC_BODY(sin_nan, tc)
+{
+#ifndef __vax__
+	const double x = 0.0L / 0.0L;
+
+	ATF_CHECK(isnan(x) != 0);
+	ATF_CHECK(isnan(sin(x)) != 0);
+#endif
+}
+
+ATF_TC(sin_inf_neg);
+ATF_TC_HEAD(sin_inf_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sin(-Inf) == NaN");
+}
+
+ATF_TC_BODY(sin_inf_neg, tc)
+{
+#ifndef __vax__
+	const double x = -1.0L / 0.0L;
+
+	ATF_CHECK(isnan(sin(x)) != 0);
+#endif
+}
+
+ATF_TC(sin_inf_pos);
+ATF_TC_HEAD(sin_inf_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sin(+Inf) == NaN");
+}
+
+ATF_TC_BODY(sin_inf_pos, tc)
+{
+#ifndef __vax__
+	const double x = 1.0L / 0.0L;
+
+	ATF_CHECK(isnan(sin(x)) != 0);
+#endif
+}
+
+
+ATF_TC(sin_zero_neg);
+ATF_TC_HEAD(sin_zero_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sin(-0.0) == -0.0");
+}
+
+ATF_TC_BODY(sin_zero_neg, tc)
+{
+#ifndef __vax__
+	const double x = -0.0L;
+
+	ATF_CHECK(sin(x) == x);
+#endif
+}
+
+ATF_TC(sin_zero_pos);
+ATF_TC_HEAD(sin_zero_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sin(+0.0) == +0.0");
+}
+
+ATF_TC_BODY(sin_zero_pos, tc)
+{
+#ifndef __vax__
+	const double x = 0.0L;
+
+	ATF_CHECK(sin(x) == x);
+#endif
+}
+
+/*
+ * sinf(3)
+ */
+ATF_TC(sinf_angles);
+ATF_TC_HEAD(sinf_angles, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test some selected angles");
+}
+
+ATF_TC_BODY(sinf_angles, tc)
+{
+	const float eps = 1.0e-6;
+	float x, y;
+	size_t i;
+
+	for (i = 0; i < __arraycount(angles); i++) {
+
+		x = angles[i].x;
+		y = angles[i].y;
+
+		if (fabs(sinf(x) - y) > eps)
+			atf_tc_fail_nonfatal("sinf(%d deg) != %0.01f",
+			    angles[i].angle, angles[i].y);
+	}
+}
+
+ATF_TC(sinf_nan);
+ATF_TC_HEAD(sinf_nan, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sinf(NaN) == NaN");
+}
+
+ATF_TC_BODY(sinf_nan, tc)
+{
+#ifndef __vax__
+	const float x = 0.0L / 0.0L;
+
+	ATF_CHECK(isnan(x) != 0);
+	ATF_CHECK(isnan(sinf(x)) != 0);
+#endif
+}
+
+ATF_TC(sinf_inf_neg);
+ATF_TC_HEAD(sinf_inf_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sinf(-Inf) == NaN");
+}
+
+ATF_TC_BODY(sinf_inf_neg, tc)
+{
+#ifndef __vax__
+	const float x = -1.0L / 0.0L;
+
+	ATF_CHECK(isnan(sinf(x)) != 0);
+#endif
+}
+
+ATF_TC(sinf_inf_pos);
+ATF_TC_HEAD(sinf_inf_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sinf(+Inf) == NaN");
+}
+
+ATF_TC_BODY(sinf_inf_pos, tc)
+{
+#ifndef __vax__
+	const float x = 1.0L / 0.0L;
+
+	ATF_CHECK(isnan(sinf(x)) != 0);
+#endif
+}
+
+
+ATF_TC(sinf_zero_neg);
+ATF_TC_HEAD(sinf_zero_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sinf(-0.0) == -0.0");
+}
+
+ATF_TC_BODY(sinf_zero_neg, tc)
+{
+#ifndef __vax__
+	const float x = -0.0L;
+
+	ATF_CHECK(sinf(x) == x);
+#endif
+}
+
+ATF_TC(sinf_zero_pos);
+ATF_TC_HEAD(sinf_zero_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test sinf(+0.0) == +0.0");
+}
+
+ATF_TC_BODY(sinf_zero_pos, tc)
+{
+#ifndef __vax__
+	const float x = 0.0L;
+
+	ATF_CHECK(sinf(x) == x);
+#endif
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, sin_angles);
+	ATF_TP_ADD_TC(tp, sin_nan);
+	ATF_TP_ADD_TC(tp, sin_inf_neg);
+	ATF_TP_ADD_TC(tp, sin_inf_pos);
+	ATF_TP_ADD_TC(tp, sin_zero_neg);
+	ATF_TP_ADD_TC(tp, sin_zero_pos);
+
+	ATF_TP_ADD_TC(tp, sinf_angles);
+	ATF_TP_ADD_TC(tp, sinf_nan);
+	ATF_TP_ADD_TC(tp, sinf_inf_neg);
+	ATF_TP_ADD_TC(tp, sinf_inf_pos);
+	ATF_TP_ADD_TC(tp, sinf_zero_neg);
+	ATF_TP_ADD_TC(tp, sinf_zero_pos);
+
+	return atf_no_error();
+}
Index: src/tests/lib/libm/t_tan.c
diff -u /dev/null src/tests/lib/libm/t_tan.c:1.1
--- /dev/null	Wed Sep 14 05:18:19 2011
+++ src/tests/lib/libm/t_tan.c	Wed Sep 14 05:18:19 2011
@@ -0,0 +1,274 @@
+/* $NetBSD: t_tan.c,v 1.1 2011/09/14 05:18:19 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jukka Ruohonen.
+ *
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <atf-c.h>
+#include <math.h>
+
+static const struct {
+	int		angle;
+	double		x;
+	double		y;
+} angles[] = {
+	{ -180, -3.141592653589793,  0.0000000000000000 },
+	{ -135, -2.356194490192345,  1.0000000000000000 },
+	{  -45, -0.785398163397448, -1.0000000000000000 },
+	{    0,  0.000000000000000,  0.0000000000000000 },
+	{   30,  0.523598775598299,  0.5773502691896258 },
+	{   45,  0.785398163397448,  1.0000000000000000 },
+	{   60,  1.047197551196598,  1.7320508075688773 },
+	{  120,  2.094395102393195, -1.7320508075688773 },
+	{  135,  2.356194490192345, -1.0000000000000000 },
+	{  150,  2.617993877991494, -0.5773502691896258 },
+	{  180,  3.141592653589793,  0.0000000000000000 },
+	{  360,  6.283185307179586,  0.0000000000000000 }
+};
+
+/*
+ * tan(3)
+ */
+ATF_TC(tan_angles);
+ATF_TC_HEAD(tan_angles, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test some selected angles");
+}
+
+ATF_TC_BODY(tan_angles, tc)
+{
+	const double eps = 1.0e-14;
+	size_t i;
+
+	for (i = 0; i < __arraycount(angles); i++) {
+
+		if (fabs(tan(angles[i].x) - angles[i].y) > eps)
+			atf_tc_fail_nonfatal("tan(%d deg) != %0.01f",
+			    angles[i].angle, angles[i].y);
+	}
+}
+
+ATF_TC(tan_nan);
+ATF_TC_HEAD(tan_nan, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tan(NaN) == NaN");
+}
+
+ATF_TC_BODY(tan_nan, tc)
+{
+#ifndef __vax__
+	const double x = 0.0L / 0.0L;
+
+	ATF_CHECK(isnan(x) != 0);
+	ATF_CHECK(isnan(tan(x)) != 0);
+#endif
+}
+
+ATF_TC(tan_inf_neg);
+ATF_TC_HEAD(tan_inf_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tan(-Inf) == NaN");
+}
+
+ATF_TC_BODY(tan_inf_neg, tc)
+{
+#ifndef __vax__
+	const double x = -1.0L / 0.0L;
+
+	ATF_CHECK(isnan(tan(x)) != 0);
+#endif
+}
+
+ATF_TC(tan_inf_pos);
+ATF_TC_HEAD(tan_inf_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tan(+Inf) == NaN");
+}
+
+ATF_TC_BODY(tan_inf_pos, tc)
+{
+#ifndef __vax__
+	const double x = 1.0L / 0.0L;
+
+	ATF_CHECK(isnan(tan(x)) != 0);
+#endif
+}
+
+
+ATF_TC(tan_zero_neg);
+ATF_TC_HEAD(tan_zero_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tan(-0.0) == -0.0");
+}
+
+ATF_TC_BODY(tan_zero_neg, tc)
+{
+#ifndef __vax__
+	const double x = -0.0L;
+
+	ATF_CHECK(tan(x) == x);
+#endif
+}
+
+ATF_TC(tan_zero_pos);
+ATF_TC_HEAD(tan_zero_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tan(+0.0) == +0.0");
+}
+
+ATF_TC_BODY(tan_zero_pos, tc)
+{
+#ifndef __vax__
+	const double x = 0.0L;
+
+	ATF_CHECK(tan(x) == x);
+#endif
+}
+
+/*
+ * tanf(3)
+ */
+ATF_TC(tanf_angles);
+ATF_TC_HEAD(tanf_angles, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test some selected angles");
+}
+
+ATF_TC_BODY(tanf_angles, tc)
+{
+	const float eps = 1.0e-6;
+	float x, y;
+	size_t i;
+
+	for (i = 0; i < __arraycount(angles); i++) {
+
+		x = angles[i].x;
+		y = angles[i].y;
+
+		if (fabs(tanf(x) - y) > eps)
+			atf_tc_fail_nonfatal("tanf(%d deg) != %0.01f",
+			    angles[i].angle, angles[i].y);
+	}
+}
+
+ATF_TC(tanf_nan);
+ATF_TC_HEAD(tanf_nan, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tanf(NaN) == NaN");
+}
+
+ATF_TC_BODY(tanf_nan, tc)
+{
+#ifndef __vax__
+	const float x = 0.0L / 0.0L;
+
+	ATF_CHECK(isnan(x) != 0);
+	ATF_CHECK(isnan(tanf(x)) != 0);
+#endif
+}
+
+ATF_TC(tanf_inf_neg);
+ATF_TC_HEAD(tanf_inf_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tanf(-Inf) == NaN");
+}
+
+ATF_TC_BODY(tanf_inf_neg, tc)
+{
+#ifndef __vax__
+	const float x = -1.0L / 0.0L;
+
+	ATF_CHECK(isnan(tanf(x)) != 0);
+#endif
+}
+
+ATF_TC(tanf_inf_pos);
+ATF_TC_HEAD(tanf_inf_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tanf(+Inf) == NaN");
+}
+
+ATF_TC_BODY(tanf_inf_pos, tc)
+{
+#ifndef __vax__
+	const float x = 1.0L / 0.0L;
+
+	ATF_CHECK(isnan(tanf(x)) != 0);
+#endif
+}
+
+
+ATF_TC(tanf_zero_neg);
+ATF_TC_HEAD(tanf_zero_neg, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tanf(-0.0) == -0.0");
+}
+
+ATF_TC_BODY(tanf_zero_neg, tc)
+{
+#ifndef __vax__
+	const float x = -0.0L;
+
+	ATF_CHECK(tanf(x) == x);
+#endif
+}
+
+ATF_TC(tanf_zero_pos);
+ATF_TC_HEAD(tanf_zero_pos, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test tanf(+0.0) == +0.0");
+}
+
+ATF_TC_BODY(tanf_zero_pos, tc)
+{
+#ifndef __vax__
+	const float x = 0.0L;
+
+	ATF_CHECK(tanf(x) == x);
+#endif
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, tan_angles);
+	ATF_TP_ADD_TC(tp, tan_nan);
+	ATF_TP_ADD_TC(tp, tan_inf_neg);
+	ATF_TP_ADD_TC(tp, tan_inf_pos);
+	ATF_TP_ADD_TC(tp, tan_zero_neg);
+	ATF_TP_ADD_TC(tp, tan_zero_pos);
+
+	ATF_TP_ADD_TC(tp, tanf_angles);
+	ATF_TP_ADD_TC(tp, tanf_nan);
+	ATF_TP_ADD_TC(tp, tanf_inf_neg);
+	ATF_TP_ADD_TC(tp, tanf_inf_pos);
+	ATF_TP_ADD_TC(tp, tanf_zero_neg);
+	ATF_TP_ADD_TC(tp, tanf_zero_pos);
+
+	return atf_no_error();
+}

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