genericopenlibs/cppstdlib/stl/test/unit/math_aux.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 16:46:38 +0300
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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*
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*/
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#ifndef __MATH_AUX_H
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#define __MATH_AUX_H
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#include <limits>
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/*
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 * This function is not only used to compare floating point values with a tolerance,
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 * it also leads to ambiguity problems if the called functions do not have the
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 * right prototype.
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 */
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template <class _Tp>
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bool are_equals(_Tp val, _Tp ref) {
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  if (val < ref) {
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    return (ref - val) <= std::numeric_limits<_Tp>::epsilon();
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  }
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  else {
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    return (val - ref) <= std::numeric_limits<_Tp>::epsilon();
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  }
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}
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#endif // __MATH_AUX_H