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Benoit Jacob 2007-08-12 11:05:44 +00:00
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commit 011c7e9ebd
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tvmet-1.7.1/testsuite/compare.h Normal file
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/* This file is part of Eigen, a C++ template library for linear algebra
* Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: SelfTest.cc,v 1.1 2004/04/24 11:55:15 opetzold Exp $
*/
/* This file is mostly a duplication of util/Fuzzy.h, but with 1000 times
* bigger epsilon. This prevents false positives in tests.
*/
#ifndef EIGEN_TESTSUITE_COMPARE_H
#define EIGEN_TESTSUITE_COMPARE_H
#include <QtTest/QtTest>
#include <cstdlib>
#include <cmath>
#include <complex>
#include <tvmet/Traits.h>
template<typename T> inline typename tvmet::Traits<T>::real_type test_epsilon()
{ return static_cast<typename tvmet::Traits<T>::real_type>(0); }
template<> inline float test_epsilon<float>() { return 1e-2f; }
template<> inline double test_epsilon<double>() { return 1e-8; }
template<> inline float test_epsilon<std::complex<float> >() { return test_epsilon<float>(); }
template<> inline double test_epsilon<std::complex<double> >() { return test_epsilon<double>(); }
/**
* Short version: returns true if the absolute value of \a a is much smaller
* than that of \a b.
*
* Full story: returns ( abs(a) <= abs(b) * test_epsilon<T> ).
*/
template<typename T> bool test_isNegligible( const T& a, const T& b )
{
return( tvmet::Traits<T>::abs(a)
<= tvmet::Traits<T>::abs(b)
* test_epsilon<T>() );
}
/**
* Short version: returns true if \a a is approximately zero.
*
* Full story: returns test_isNegligible( a, static_cast<T>(1) );
*/
template<typename T> bool test_isZero( const T& a )
{
return test_isNegligible( a, static_cast<T>(1) );
}
/**
* Short version: returns true if a is very close to b, false otherwise.
*
* Full story: returns abs( a - b ) <= min( abs(a), abs(b) ) * test_epsilon<T>.
*/
template<typename T> bool test_isApprox( const T& a, const T& b )
{
return( tvmet::Traits<T>::abs( a - b )
<= std::min( tvmet::Traits<T>::abs(a),
tvmet::Traits<T>::abs(b) ) * test_epsilon<T>() );
}
/**
* Short version: returns true if a is smaller or approximately equalt to b, false otherwise.
*
* Full story: returns a <= b || test_isApprox(a, b);
*/
template<typename T> bool test_isLessThan( const T& a, const T& b )
{
return( tvmet::Traits<T>::isLessThan_nonfuzzy(a, b) || test_isApprox(a, b) );
}
#define TEST(a) QVERIFY(a)
#define TEST_NEGLIGIBLE(a,b) QVERIFY(test_isNegligible(a,b))
#define TEST_ZERO(a) QVERIFY(test_isZero(a))
#define TEST_APPROX(a,b) QVERIFY(test_isApprox(a,b))
#define TEST_LESSTHAN(a,b) QVERIFY(test_isLessThan(a,b))
#endif // EIGEN_TESTSUITE_COMPARE_H