/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This file is part of the LibreOffice project .
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License , v . 2 . 0 . If a copy of the MPL was not distributed with this
* file , You can obtain one at http : //mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice :
*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership . The ASF licenses this file to you under the Apache
* License , Version 2 . 0 ( the " License " ) ; you may not use this file
* except in compliance with the License . You may obtain a copy of
* the License at http : //www.apache.org/licenses/LICENSE-2.0 .
*/
#include <cppunit/TestAssert.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <rtl/math.hxx>
#include <cmath>
/*
In tdf # 148430 , we try to replace rtl math functions to std functions ,
this unit test is to demonstrate this replacement will not change
the behavior of code and no other unexpected results .
You can see more discussions in https : //gerrit.libreoffice.org/c/core/+/138294.
*/
class Test : public CppUnit::TestFixture
{
public :
void test_erf()
{
double x, rtl_res, std_res;
x = 0 .0 ;
rtl_res = rtl::math::erf(x);
std_res = std::erf(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
rtl::math::setInf(&x, false );
rtl_res = rtl::math::erf(x);
std_res = std::erf(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
rtl::math::setInf(&x, true );
rtl_res = rtl::math::erf(x);
std_res = std::erf(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
rtl::math::setNan(&x);
rtl_res = rtl::math::erf(x);
std_res = std::erf(x);
CPPUNIT_ASSERT_EQUAL(std::isnan(rtl_res), std::isnan(std_res));
x = 3 .0 ;
rtl_res = rtl::math::erf(-x);
std_res = std::erf(-x);
CPPUNIT_ASSERT_DOUBLES_EQUAL(-std::erf(x), rtl_res, 1 E-12 );
CPPUNIT_ASSERT_DOUBLES_EQUAL(-rtl::math::erf(x), std_res, 1 E-12 );
}
void test_erfc()
{
double x, rtl_res, std_res;
x = 0 .0 ;
rtl_res = rtl::math::erfc(x);
std_res = std::erfc(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
rtl::math::setInf(&x, false );
rtl_res = rtl::math::erfc(x);
std_res = std::erfc(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
rtl::math::setInf(&x, true );
rtl_res = rtl::math::erfc(x);
std_res = std::erfc(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
rtl::math::setNan(&x);
rtl_res = rtl::math::erfc(x);
std_res = std::erfc(x);
CPPUNIT_ASSERT_EQUAL(std::isnan(rtl_res), std::isnan(std_res));
x = 3 .0 ;
rtl_res = rtl::math::erfc(-x);
std_res = std::erfc(-x);
CPPUNIT_ASSERT_DOUBLES_EQUAL(2 .0 - std::erfc(x), rtl_res, 1 E-12 );
CPPUNIT_ASSERT_DOUBLES_EQUAL(2 .0 - rtl::math::erfc(x), std_res, 1 E-12 );
}
void test_expm1()
{
double x, rtl_res, std_res;
x = 0 .0 ;
rtl_res = rtl::math::expm1(x);
std_res = std::expm1(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
x = -0 .0 ;
rtl_res = rtl::math::expm1(x);
std_res = std::expm1(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
CPPUNIT_ASSERT_EQUAL(std::signbit(rtl_res), std::signbit(std_res));
rtl::math::setInf(&x, false );
rtl_res = rtl::math::expm1(x);
std_res = std::expm1(x);
CPPUNIT_ASSERT_EQUAL(std::isinf(rtl_res) && !std::signbit(rtl_res),
std::isinf(std_res) && !std::signbit(std_res));
rtl::math::setInf(&x, true );
rtl_res = rtl::math::expm1(x);
std_res = std::expm1(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
rtl::math::setNan(&x);
rtl_res = rtl::math::expm1(x);
std_res = std::expm1(x);
CPPUNIT_ASSERT_EQUAL(std::isnan(rtl_res), std::isnan(std_res));
}
void test_log1p()
{
double x, rtl_res, std_res;
x = 0 .0 ;
rtl_res = rtl::math::log1p(x);
std_res = std::log1p(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
x = -0 .0 ;
rtl_res = rtl::math::log1p(x);
std_res = std::log1p(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
CPPUNIT_ASSERT_EQUAL(std::signbit(rtl_res), std::signbit(std_res));
rtl::math::setInf(&x, false );
rtl_res = rtl::math::log1p(x);
std_res = std::log1p(x);
CPPUNIT_ASSERT_EQUAL(std::isinf(rtl_res) && !std::signbit(rtl_res),
std::isinf(std_res) && !std::signbit(std_res));
x = -1 .0 ;
rtl_res = rtl::math::log1p(x);
std_res = std::log1p(x);
CPPUNIT_ASSERT_EQUAL(std::isinf(rtl_res) && std::signbit(rtl_res),
std::isinf(std_res) && std::signbit(std_res));
x = -1 .1 ;
rtl_res = rtl::math::log1p(x);
std_res = std::log1p(x);
CPPUNIT_ASSERT_EQUAL(std::isnan(rtl_res), std::isnan(std_res));
rtl::math::setInf(&x, true );
rtl_res = rtl::math::log1p(x);
std_res = std::log1p(x);
CPPUNIT_ASSERT_EQUAL(std::isnan(rtl_res), std::isnan(std_res));
rtl::math::setNan(&x);
rtl_res = rtl::math::log1p(x);
std_res = std::log1p(x);
CPPUNIT_ASSERT_EQUAL(std::isnan(rtl_res), std::isnan(std_res));
}
void test_atanh()
{
double x, rtl_res, std_res;
x = -2 .0 ;
rtl_res = rtl::math::atanh(x); // NaN
std_res = std::atanh(x);
CPPUNIT_ASSERT_EQUAL(std::isnan(rtl_res), std::isnan(std_res));
x = -1 .0 ;
rtl_res = rtl::math::atanh(x); // -Inf
std_res = std::atanh(x);
CPPUNIT_ASSERT_EQUAL(std::signbit(rtl_res), std::signbit(std_res));
CPPUNIT_ASSERT_EQUAL(std::isinf(rtl_res), std::isinf(std_res));
x = 0 .0 ;
rtl_res = rtl::math::atanh(x);
std_res = std::atanh(x);
CPPUNIT_ASSERT_EQUAL(rtl_res, std_res);
x = 1 .0 ;
rtl_res = rtl::math::atanh(1 .0 ); // +Inf
std_res = std::atanh(x);
CPPUNIT_ASSERT_EQUAL(std::signbit(rtl_res), std::signbit(std_res));
CPPUNIT_ASSERT_EQUAL(std::isinf(rtl_res), std::isinf(std_res));
x = 2 .0 ;
rtl_res = rtl::math::atanh(2 .0 ); // NaN
std_res = std::atanh(x);
CPPUNIT_ASSERT_EQUAL(std::isnan(rtl_res), std::isnan(std_res));
}
CPPUNIT_TEST_SUITE(Test);
CPPUNIT_TEST(test_erf);
CPPUNIT_TEST(test_erfc);
CPPUNIT_TEST(test_expm1);
CPPUNIT_TEST(test_log1p);
CPPUNIT_TEST(test_atanh);
CPPUNIT_TEST_SUITE_END();
};
CPPUNIT_TEST_SUITE_REGISTRATION(Test);
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
Messung V0.5 in Prozent C=95 H=100 G=97
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-01)
¤
*© Formatika GbR, Deutschland