1ec3feb648
I did this without a full vendor update since that would cause too many conflicts. Since these files now almost match the NetBSD sources the next git subtree merge should work just fine. Reviewed By: lwhsu Differential Revision: https://reviews.freebsd.org/D28797
106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/* $NetBSD: t_acos.c,v 1.11 2018/11/07 03:59:36 riastradh 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 <atf-c.h>
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#include <math.h>
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#include "t_libm.h"
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/*
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* acos(3) and acosf(3)
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*/
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ATF_LIBM_TEST(acos_is_nan, "Test acos/acosf(x) == NaN, x = NaN, +/-Inf, ![-1..1]")
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{
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static const double x[] = {
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-1.000000001, 1.000000001,
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-1.0000001, 1.0000001,
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-1.1, 1.1,
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#ifndef __vax__
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T_LIBM_NAN,
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T_LIBM_MINUS_INF, T_LIBM_PLUS_INF,
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#endif
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};
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unsigned int i;
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for (i = 0; i < __arraycount(x); i++) {
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T_LIBM_CHECK_NAN(i, acos, x[i]);
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if (i < 2)
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/* Values are too small for float */
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continue;
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T_LIBM_CHECK_NAN(i, acosf, x[i]);
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}
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}
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ATF_LIBM_TEST(acos_inrange, "Test acos/acosf(x) for some valid values")
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{
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static const struct {
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double x;
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double y;
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} values[] = {
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{ -1, M_PI, },
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{ -0.99, 3.000053180265366, },
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{ -0.5, 2.094395102393195, },
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{ -0.1, 1.670963747956456, },
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{ 0, M_PI / 2, },
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{ 0.1, 1.470628905633337, },
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{ 0.5, 1.047197551196598, },
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{ 0.99, 0.1415394733244273, },
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};
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unsigned int i;
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/*
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* Note that acos(x) might be calculated as atan2(sqrt(1-x*x),x).
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* This means that acos(-1) is atan2(+0,-1), if the sign is wrong
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* the value will be -M_PI (atan2(-0,-1)) not M_PI.
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*/
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for (i = 0; i < __arraycount(values); i++) {
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T_LIBM_CHECK(i, acos, values[i].x, values[i].y, 1.0e-15);
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T_LIBM_CHECK(i, acosf, values[i].x, values[i].y, 1.0e-5);
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}
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}
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ATF_LIBM_TEST(acos_is_plus_zero, "Test acosf(1.0) == +0.0")
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{
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T_LIBM_CHECK_PLUS_ZERO(0, acos, 1.0);
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T_LIBM_CHECK_PLUS_ZERO(0, acosf, 1.0);
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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, acos_inrange);
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ATF_TP_ADD_TC(tp, acos_is_nan);
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ATF_TP_ADD_TC(tp, acos_is_plus_zero);
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return atf_no_error();
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}
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