Module Name:    src
Committed By:   gdt
Date:           Thu Sep 19 19:43:13 UTC 2024

Modified Files:
        src/distrib/sets/lists/debug: mi
        src/distrib/sets/lists/tests: mi
        src/tests/lib/libm: Makefile
Added Files:
        src/tests/lib/libm: t_remquo.c

Log Message:
tests: Add test for remquo

This test currently fails, because remquo has bugs.  (A bugfix will be
committed soon.)  Test vectors derived from results from code by
Charles Karney in GeodesicLib/proj, and manually inspected.


To generate a diff of this commit:
cvs rdiff -u -r1.448 -r1.449 src/distrib/sets/lists/debug/mi
cvs rdiff -u -r1.1338 -r1.1339 src/distrib/sets/lists/tests/mi
cvs rdiff -u -r1.50 -r1.51 src/tests/lib/libm/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/lib/libm/t_remquo.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/debug/mi
diff -u src/distrib/sets/lists/debug/mi:1.448 src/distrib/sets/lists/debug/mi:1.449
--- src/distrib/sets/lists/debug/mi:1.448	Mon Sep  9 15:06:29 2024
+++ src/distrib/sets/lists/debug/mi	Thu Sep 19 19:43:13 2024
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.448 2024/09/09 15:06:29 riastradh Exp $
+# $NetBSD: mi,v 1.449 2024/09/19 19:43:13 gdt Exp $
 #
 ./etc/mtree/set.debug                           comp-sys-root
 ./usr/lib					comp-sys-usr		compatdir
@@ -2337,6 +2337,7 @@
 ./usr/libdata/debug/usr/tests/lib/libm/t_next.debug			tests-lib-debug		debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libm/t_pow.debug			tests-lib-debug		debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libm/t_precision.debug		tests-lib-debug		debug,atf,compattestfile
+./usr/libdata/debug/usr/tests/lib/libm/t_remquo.debug			tests-lib-debug		debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libm/t_round.debug			tests-lib-debug		debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libm/t_scalbn.debug			tests-lib-debug		debug,atf,compattestfile
 ./usr/libdata/debug/usr/tests/lib/libm/t_sin.debug			tests-lib-debug		debug,atf,compattestfile

Index: src/distrib/sets/lists/tests/mi
diff -u src/distrib/sets/lists/tests/mi:1.1338 src/distrib/sets/lists/tests/mi:1.1339
--- src/distrib/sets/lists/tests/mi:1.1338	Sun Sep 15 13:57:21 2024
+++ src/distrib/sets/lists/tests/mi	Thu Sep 19 19:43:13 2024
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.1338 2024/09/15 13:57:21 martin Exp $
+# $NetBSD: mi,v 1.1339 2024/09/19 19:43:13 gdt Exp $
 #
 # Note: don't delete entries from here - mark them as "obsolete" instead.
 #
@@ -3981,6 +3981,7 @@
 ./usr/tests/lib/libm/t_next				tests-lib-tests		compattestfile,atf
 ./usr/tests/lib/libm/t_pow				tests-lib-tests		compattestfile,atf
 ./usr/tests/lib/libm/t_precision			tests-lib-tests		compattestfile,atf
+./usr/tests/lib/libm/t_remquo				tests-lib-tests		compattestfile,atf
 ./usr/tests/lib/libm/t_round				tests-lib-tests		compattestfile,atf
 ./usr/tests/lib/libm/t_scalbn				tests-lib-tests		compattestfile,atf
 ./usr/tests/lib/libm/t_sin				tests-lib-tests		compattestfile,atf

Index: src/tests/lib/libm/Makefile
diff -u src/tests/lib/libm/Makefile:1.50 src/tests/lib/libm/Makefile:1.51
--- src/tests/lib/libm/Makefile:1.50	Mon Sep  9 15:06:29 2024
+++ src/tests/lib/libm/Makefile	Thu Sep 19 19:43:13 2024
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.50 2024/09/09 15:06:29 riastradh Exp $
+# $NetBSD: Makefile,v 1.51 2024/09/19 19:43:13 gdt Exp $
 
 .include <bsd.own.mk>
 
@@ -39,6 +39,7 @@ TESTS_C+=	t_modf
 TESTS_C+=	t_next
 TESTS_C+=	t_pow
 TESTS_C+=	t_precision
+TESTS_C+=	t_remquo
 TESTS_C+=	t_round
 TESTS_C+=	t_scalbn
 TESTS_C+=	t_sin

Added files:

Index: src/tests/lib/libm/t_remquo.c
diff -u /dev/null src/tests/lib/libm/t_remquo.c:1.1
--- /dev/null	Thu Sep 19 19:43:14 2024
+++ src/tests/lib/libm/t_remquo.c	Thu Sep 19 19:43:13 2024
@@ -0,0 +1,114 @@
+/* $NetBSD: t_remquo.c,v 1.1 2024/09/19 19:43:13 gdt 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 and Greg Troxel.
+ *
+ * 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 <assert.h>
+#include <atf-c.h>
+#include <float.h>
+#include <math.h>
+
+static const struct {
+	double		x;
+	double		y;
+	double		r;	/* expected */
+	int		quo;	/* expected */
+} args[] = {
+	{ -135.0,	-90.0,		45.0,	2 },
+	{ -45.0,	-90.0,		-45.0,	8 },
+	{ 45.0,		-90.0,		45.0,	-8 },
+	{ 135.0,	-90.0,		-45.0,	-2 },
+	{ -180.0,	90.0,		-0.0,	-2 },
+	{ -135.0,	90.0,		45.0,	-2 },
+	{ -90.0,	90.0,		-0.0,	-1 },
+	{ -45.0,	90.0,		-45.0,	-8 },
+	{ 0.0,		90.0,		0.0,	0 },
+	{ 45.0,		90.0,		45.0,	8 },
+	{ 90.0,		90.0,		0.0,	1 },
+	{ 135.0,	90.0,		-45.0,	2 },
+	{ 180.0,	90.0,		0.0,	2 },
+};
+
+/*
+ * remquo(3)
+ */
+ATF_TC(remquo_args);
+ATF_TC_HEAD(remquo_args, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "Test some selected arguments");
+}
+
+ATF_TC_BODY(remquo_args, tc)
+{
+	const double eps = DBL_EPSILON;
+	size_t i;
+
+	for (i = 0; i < __arraycount(args); i++) {
+		double x = args[i].x;
+		double y = args[i].y;
+		double r;
+		double r_exp = args[i].r;
+		int quo;
+		int quo_exp = args[i].quo;
+
+		bool ok = true;
+
+		r = remquo(x, y, &quo);
+
+		ok &= (fabs(r - r_exp) <= eps);
+
+		/*
+		 * For now, consider 0 to have positive sign.
+		 */
+		if (quo_exp < 0 && quo >= 0)
+			ok = false;
+		if (quo_exp >= 0 && quo < 0)
+			ok = false;
+
+		/*
+		 * The specification requires that quo be congruent to
+		 * the integer remainder modulo 2^k for some k >=3.
+		 */
+		ok &= ((quo & 0x7) == (quo_exp & 0x7));
+
+		if (!ok) {
+			atf_tc_fail_nonfatal("remquo(%g, %g) "
+			    "r/quo expected %g/%d != %g/%d",
+			     x, y, r_exp, quo_exp, r, quo);
+		}
+	}
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, remquo_args);
+
+	return atf_no_error();
+}

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