tested errno isn't stale This was needed in order for the test to pass on amd64 with stable/10 MFC after: 3 days
533 lines
12 KiB
C
533 lines
12 KiB
C
/* $NetBSD: t_scalbn.c,v 1.11 2014/03/03 10:39:08 martin Exp $ */
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/*-
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* Copyright (c) 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jukka Ruohonen.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: t_scalbn.c,v 1.11 2014/03/03 10:39:08 martin Exp $");
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#include <math.h>
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#include <limits.h>
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#include <float.h>
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#include <errno.h>
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#include <atf-c.h>
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static const int exps[] = { 0, 1, -1, 100, -100 };
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/* tests here do not require specific precision, so we just use double */
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struct testcase {
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int exp;
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double inval;
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double result;
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int error;
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};
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struct testcase test_vals[] = {
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{ 0, 1.00085, 1.00085, 0 },
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{ 0, 0.99755, 0.99755, 0 },
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{ 0, -1.00085, -1.00085, 0 },
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{ 0, -0.99755, -0.99755, 0 },
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{ 1, 1.00085, 2.0* 1.00085, 0 },
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{ 1, 0.99755, 2.0* 0.99755, 0 },
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{ 1, -1.00085, 2.0* -1.00085, 0 },
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{ 1, -0.99755, 2.0* -0.99755, 0 },
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/*
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* We could add more corner test cases here, but we would have to
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* add some ifdefs for the exact format and use a reliable
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* generator program - bail for now and only do trivial stuff above.
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*/
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};
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/*
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* scalbn(3)
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*/
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ATF_TC(scalbn_val);
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ATF_TC_HEAD(scalbn_val, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbn() for a few values");
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}
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ATF_TC_BODY(scalbn_val, tc)
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{
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const struct testcase *tests = test_vals;
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const size_t tcnt = __arraycount(test_vals);
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size_t i;
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double rv;
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for (i = 0; i < tcnt; i++) {
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#ifdef __FreeBSD__
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errno = 0;
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#endif
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rv = scalbn(tests[i].inval, tests[i].exp);
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ATF_CHECK_EQ_MSG(errno, tests[i].error,
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"test %zu: errno %d instead of %d", i, errno,
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tests[i].error);
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ATF_CHECK_MSG(fabs(rv-tests[i].result)<2.0*DBL_EPSILON,
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"test %zu: return value %g instead of %g (difference %g)",
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i, rv, tests[i].result, tests[i].result-rv);
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}
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}
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ATF_TC(scalbn_nan);
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ATF_TC_HEAD(scalbn_nan, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbn(NaN, n) == NaN");
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}
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ATF_TC_BODY(scalbn_nan, tc)
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{
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const double x = 0.0L / 0.0L;
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double y;
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size_t i;
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ATF_REQUIRE(isnan(x) != 0);
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbn(x, exps[i]);
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ATF_CHECK(isnan(y) != 0);
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}
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}
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ATF_TC(scalbn_inf_neg);
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ATF_TC_HEAD(scalbn_inf_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbn(-Inf, n) == -Inf");
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}
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ATF_TC_BODY(scalbn_inf_neg, tc)
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{
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const double x = -1.0L / 0.0L;
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size_t i;
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for (i = 0; i < __arraycount(exps); i++)
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ATF_CHECK(scalbn(x, exps[i]) == x);
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}
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ATF_TC(scalbn_inf_pos);
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ATF_TC_HEAD(scalbn_inf_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbn(+Inf, n) == +Inf");
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}
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ATF_TC_BODY(scalbn_inf_pos, tc)
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{
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const double x = 1.0L / 0.0L;
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size_t i;
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for (i = 0; i < __arraycount(exps); i++)
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ATF_CHECK(scalbn(x, exps[i]) == x);
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}
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ATF_TC(scalbn_ldexp);
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ATF_TC_HEAD(scalbn_ldexp, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbn(x, n) == ldexp(x, n)");
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}
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ATF_TC_BODY(scalbn_ldexp, tc)
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{
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#if FLT_RADIX == 2
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const double x = 2.91288191221812821;
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double y;
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size_t i;
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbn(x, exps[i]);
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ATF_CHECK_MSG(y == ldexp(x, exps[i]), "test %zu: exponent=%d, "
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"y=%g, expected %g (diff: %g)", i, exps[i], y,
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ldexp(x, exps[i]), y - ldexp(x, exps[i]));
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}
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#endif
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}
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ATF_TC(scalbn_zero_neg);
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ATF_TC_HEAD(scalbn_zero_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbn(-0.0, n) == -0.0");
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}
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ATF_TC_BODY(scalbn_zero_neg, tc)
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{
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const double x = -0.0L;
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double y;
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size_t i;
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ATF_REQUIRE(signbit(x) != 0);
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbn(x, exps[i]);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(y) != 0);
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}
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}
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ATF_TC(scalbn_zero_pos);
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ATF_TC_HEAD(scalbn_zero_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbn(+0.0, n) == +0.0");
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}
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ATF_TC_BODY(scalbn_zero_pos, tc)
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{
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const double x = 0.0L;
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double y;
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size_t i;
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ATF_REQUIRE(signbit(x) == 0);
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbn(x, exps[i]);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(y) == 0);
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}
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}
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/*
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* scalbnf(3)
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*/
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ATF_TC(scalbnf_val);
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ATF_TC_HEAD(scalbnf_val, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnf() for a few values");
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}
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ATF_TC_BODY(scalbnf_val, tc)
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{
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const struct testcase *tests = test_vals;
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const size_t tcnt = __arraycount(test_vals);
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size_t i;
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double rv;
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for (i = 0; i < tcnt; i++) {
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#ifdef __FreeBSD__
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errno = 0;
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#endif
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rv = scalbnf(tests[i].inval, tests[i].exp);
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ATF_CHECK_EQ_MSG(errno, tests[i].error,
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"test %zu: errno %d instead of %d", i, errno,
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tests[i].error);
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ATF_CHECK_MSG(fabs(rv-tests[i].result)<2.0*FLT_EPSILON,
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"test %zu: return value %g instead of %g (difference %g)",
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i, rv, tests[i].result, tests[i].result-rv);
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}
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}
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ATF_TC(scalbnf_nan);
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ATF_TC_HEAD(scalbnf_nan, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnf(NaN, n) == NaN");
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}
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ATF_TC_BODY(scalbnf_nan, tc)
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{
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const float x = 0.0L / 0.0L;
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float y;
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size_t i;
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ATF_REQUIRE(isnan(x) != 0);
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbnf(x, exps[i]);
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ATF_CHECK(isnan(y) != 0);
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}
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}
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ATF_TC(scalbnf_inf_neg);
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ATF_TC_HEAD(scalbnf_inf_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnf(-Inf, n) == -Inf");
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}
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ATF_TC_BODY(scalbnf_inf_neg, tc)
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{
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const float x = -1.0L / 0.0L;
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size_t i;
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for (i = 0; i < __arraycount(exps); i++)
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ATF_CHECK(scalbnf(x, exps[i]) == x);
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}
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ATF_TC(scalbnf_inf_pos);
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ATF_TC_HEAD(scalbnf_inf_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnf(+Inf, n) == +Inf");
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}
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ATF_TC_BODY(scalbnf_inf_pos, tc)
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{
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const float x = 1.0L / 0.0L;
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size_t i;
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for (i = 0; i < __arraycount(exps); i++)
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ATF_CHECK(scalbnf(x, exps[i]) == x);
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}
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ATF_TC(scalbnf_ldexpf);
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ATF_TC_HEAD(scalbnf_ldexpf, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnf(x, n) == ldexpf(x, n)");
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}
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ATF_TC_BODY(scalbnf_ldexpf, tc)
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{
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#if FLT_RADIX == 2
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const float x = 2.91288191221812821;
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float y;
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size_t i;
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbnf(x, exps[i]);
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ATF_CHECK_MSG(y == ldexpf(x, exps[i]),
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"test %zu: exponent=%d, y=%g ldexpf returns %g (diff: %g)",
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i, exps[i], y, ldexpf(x, exps[i]), y-ldexpf(x, exps[i]));
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}
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#endif
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}
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ATF_TC(scalbnf_zero_neg);
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ATF_TC_HEAD(scalbnf_zero_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnf(-0.0, n) == -0.0");
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}
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ATF_TC_BODY(scalbnf_zero_neg, tc)
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{
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const float x = -0.0L;
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float y;
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size_t i;
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ATF_REQUIRE(signbit(x) != 0);
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbnf(x, exps[i]);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(y) != 0);
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}
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}
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ATF_TC(scalbnf_zero_pos);
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ATF_TC_HEAD(scalbnf_zero_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnf(+0.0, n) == +0.0");
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}
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ATF_TC_BODY(scalbnf_zero_pos, tc)
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{
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const float x = 0.0L;
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float y;
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size_t i;
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ATF_REQUIRE(signbit(x) == 0);
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbnf(x, exps[i]);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(y) == 0);
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}
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}
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/*
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* scalbnl(3)
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*/
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ATF_TC(scalbnl_val);
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ATF_TC_HEAD(scalbnl_val, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnl() for a few values");
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}
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ATF_TC_BODY(scalbnl_val, tc)
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{
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#ifndef __HAVE_LONG_DOUBLE
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atf_tc_skip("Requires long double support");
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#else
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const struct testcase *tests = test_vals;
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const size_t tcnt = __arraycount(test_vals);
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size_t i;
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long double rv;
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for (i = 0; i < tcnt; i++) {
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#ifdef __FreeBSD__
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errno = 0;
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#endif
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rv = scalbnl(tests[i].inval, tests[i].exp);
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ATF_CHECK_EQ_MSG(errno, tests[i].error,
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"test %zu: errno %d instead of %d", i, errno,
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tests[i].error);
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ATF_CHECK_MSG(fabsl(rv-(long double)tests[i].result)<2.0*LDBL_EPSILON,
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"test %zu: return value %Lg instead of %Lg (difference %Lg)",
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i, rv, (long double)tests[i].result, (long double)tests[i].result-rv);
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}
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#endif
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}
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ATF_TC(scalbnl_nan);
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ATF_TC_HEAD(scalbnl_nan, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnl(NaN, n) == NaN");
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}
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ATF_TC_BODY(scalbnl_nan, tc)
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{
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#ifndef __HAVE_LONG_DOUBLE
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atf_tc_skip("Requires long double support");
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#else
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const long double x = 0.0L / 0.0L;
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long double y;
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size_t i;
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if (isnan(x) == 0) {
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atf_tc_expect_fail("PR lib/45362");
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atf_tc_fail("(0.0L / 0.0L) != NaN");
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}
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbnl(x, exps[i]);
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ATF_CHECK(isnan(y) != 0);
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}
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#endif
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}
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ATF_TC(scalbnl_inf_neg);
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ATF_TC_HEAD(scalbnl_inf_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnl(-Inf, n) == -Inf");
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}
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ATF_TC_BODY(scalbnl_inf_neg, tc)
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{
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#ifndef __HAVE_LONG_DOUBLE
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atf_tc_skip("Requires long double support");
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#else
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const long double x = -1.0L / 0.0L;
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size_t i;
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for (i = 0; i < __arraycount(exps); i++)
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ATF_CHECK(scalbnl(x, exps[i]) == x);
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#endif
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}
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ATF_TC(scalbnl_inf_pos);
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ATF_TC_HEAD(scalbnl_inf_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnl(+Inf, n) == +Inf");
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}
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ATF_TC_BODY(scalbnl_inf_pos, tc)
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{
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#ifndef __HAVE_LONG_DOUBLE
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atf_tc_skip("Requires long double support");
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#else
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const long double x = 1.0L / 0.0L;
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size_t i;
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for (i = 0; i < __arraycount(exps); i++)
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ATF_CHECK(scalbnl(x, exps[i]) == x);
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#endif
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}
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ATF_TC(scalbnl_zero_neg);
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ATF_TC_HEAD(scalbnl_zero_neg, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnl(-0.0, n) == -0.0");
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}
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ATF_TC_BODY(scalbnl_zero_neg, tc)
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{
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#ifndef __HAVE_LONG_DOUBLE
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atf_tc_skip("Requires long double support");
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#else
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const long double x = -0.0L;
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long double y;
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size_t i;
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ATF_REQUIRE(signbit(x) != 0);
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbnl(x, exps[i]);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(y) != 0);
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}
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#endif
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}
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ATF_TC(scalbnl_zero_pos);
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ATF_TC_HEAD(scalbnl_zero_pos, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test scalbnl(+0.0, n) == +0.0");
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}
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ATF_TC_BODY(scalbnl_zero_pos, tc)
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{
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#ifndef __HAVE_LONG_DOUBLE
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atf_tc_skip("Requires long double support");
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#else
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const long double x = 0.0L;
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long double y;
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size_t i;
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ATF_REQUIRE(signbit(x) == 0);
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for (i = 0; i < __arraycount(exps); i++) {
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y = scalbnl(x, exps[i]);
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ATF_CHECK(x == y);
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ATF_CHECK(signbit(y) == 0);
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}
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#endif
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, scalbn_val);
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ATF_TP_ADD_TC(tp, scalbn_nan);
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ATF_TP_ADD_TC(tp, scalbn_inf_neg);
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ATF_TP_ADD_TC(tp, scalbn_inf_pos);
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ATF_TP_ADD_TC(tp, scalbn_ldexp);
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ATF_TP_ADD_TC(tp, scalbn_zero_neg);
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ATF_TP_ADD_TC(tp, scalbn_zero_pos);
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ATF_TP_ADD_TC(tp, scalbnf_val);
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ATF_TP_ADD_TC(tp, scalbnf_nan);
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ATF_TP_ADD_TC(tp, scalbnf_inf_neg);
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ATF_TP_ADD_TC(tp, scalbnf_inf_pos);
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ATF_TP_ADD_TC(tp, scalbnf_ldexpf);
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ATF_TP_ADD_TC(tp, scalbnf_zero_neg);
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ATF_TP_ADD_TC(tp, scalbnf_zero_pos);
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ATF_TP_ADD_TC(tp, scalbnl_val);
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ATF_TP_ADD_TC(tp, scalbnl_nan);
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ATF_TP_ADD_TC(tp, scalbnl_inf_neg);
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ATF_TP_ADD_TC(tp, scalbnl_inf_pos);
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/* ATF_TP_ADD_TC(tp, scalbnl_ldexp); */
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ATF_TP_ADD_TC(tp, scalbnl_zero_neg);
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ATF_TP_ADD_TC(tp, scalbnl_zero_pos);
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return atf_no_error();
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}
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