/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
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* 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 .
*/
#pragma once
#include <formula/errorcodes.hxx>
namespace sc {
/** Return fNumerator/fDenominator if fDenominator!=0 else #DIV/0! error coded
into double .
*/
inline double div( const double & fNumerator, const double & fDenominator )
{
return (fDenominator != 0 .0 ) ? (fNumerator / fDenominator) :
CreateDoubleError( FormulaError::DivisionByZero);
}
/** Return fNumerator/fDenominator if fDenominator!=0 else +-Infinity if
fNumerator ! = 0 or NaN if fNumerator = = 0 .
This allows to build / run with - fsanitize = float - divide - by - zero and have a
defined behavior for the otherwise undefined division by zero case ( " If the
second operand of / or % is zero the behavior is undefined . "
( [ expr . mul ] / 4 ) ) .
The Calc interpreter gracefully handles Infinity or NaN double values
encountered as interim or final results , using this function we can ensure
defined behavior where desired .
Use where the double coded error creating div ( ) is not wanted .
*/
inline double divide( const double & fNumerator, const double & fDenominator )
{
if (fDenominator == 0 .0 )
{
if (std::isfinite( fNumerator) && fNumerator != 0 .0 )
return std::signbit(fNumerator) ? -std::numeric_limits<double >::infinity()
: std::numeric_limits<double >::infinity();
return std::numeric_limits<double >::quiet_NaN();
}
return fNumerator / fDenominator;
}
/** Return pow(fVal1,fVal2) with error handling.
If an error was detected , a coded double error of
FormulaError : : IllegalFPOperation is returned .
*/
double power( const double & fVal1, const double & fVal2 );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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