11be35a165
To do so, a few dependencies have been imported: * external/bsd/lutok * external/mit/lua * external/public-domain/sqlite * external/public-domain/xz The Kyua framework is the new generation of ATF (Automated Test Framework), it is composed of: * external/bsd/atf * external/bsd/kyua-atf-compat * external/bsd/kyua-cli * external/bsd/kyua-tester * tests Kyua/ATF being written in C++, it depends on libstdc++ which is provided by GCC. As this is not part of the sources, Kyua is only compiled when the native GCC utils are installed. To install Kyua do the following: * In a cross-build enviromnent, add the following to the build.sh commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes WARNING: At this point the import is still experimental, and not supported on native builds (a.k.a make build). Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/* $NetBSD: t_round.c,v 1.3 2011/09/13 08:58:41 jruoho 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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* 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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/*
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* This tests for a bug in the initial implementation where
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* precision was lost in an internal substraction, leading to
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* rounding into the wrong direction.
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*/
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/* 0.5 - EPSILON */
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#define VAL 0x0.7ffffffffffffcp0
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#define VALF 0x0.7fffff8p0
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#ifdef __vax__
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#define SMALL_NUM 1.0e-38
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#else
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#define SMALL_NUM 1.0e-40
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#endif
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ATF_TC(round_dir);
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ATF_TC_HEAD(round_dir, tc)
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{
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atf_tc_set_md_var(tc, "descr","Check for rounding in wrong direction");
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}
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ATF_TC_BODY(round_dir, tc)
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{
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double a = VAL, b, c;
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float af = VALF, bf, cf;
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b = round(a);
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bf = roundf(af);
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ATF_CHECK(fabs(b) < SMALL_NUM);
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ATF_CHECK(fabsf(bf) < SMALL_NUM);
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c = round(-a);
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cf = roundf(-af);
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ATF_CHECK(fabs(c) < SMALL_NUM);
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ATF_CHECK(fabsf(cf) < SMALL_NUM);
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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, round_dir);
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return atf_no_error();
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}
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