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/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
Copyright (C) 2008 J. Erik Radmall
This file is part of QuantLib, a free-software/open-source library
for financial quantitative analysts and developers - http://quantlib.org/
QuantLib is free software: you can redistribute it and/or modify it
under the terms of the QuantLib license. You should have received a
copy of the license along with this program; if not, please email
<quantlib-dev@lists.sf.net>. The license is also available online at
<http://quantlib.org/license.shtml>.
This program 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 license for more details.
*/
#include <ql/experimental/commodities/quantity.hpp>
#include <ql/experimental/commodities/unitofmeasureconversionmanager.hpp>
#include <ql/math/comparison.hpp>
#include <ql/errors.hpp>
namespace QuantLib {
Quantity::ConversionType Quantity::conversionType = Quantity::NoConversion;
UnitOfMeasure Quantity::baseUnitOfMeasure = UnitOfMeasure();
namespace {
void convertTo(Quantity& m, const UnitOfMeasure& target) {
if (m.unitOfMeasure() != target) {
UnitOfMeasureConversion rate =
UnitOfMeasureConversionManager::instance().lookup(
m.commodityType(), m.unitOfMeasure(), target);
m = rate.convert(m).rounded();
}
}
void convertToBase(Quantity& m) {
QL_REQUIRE(!Quantity::baseUnitOfMeasure.empty(),
"no base unitOfMeasure set");
convertTo(m, Quantity::baseUnitOfMeasure);
}
}
Quantity& Quantity::operator+=(const Quantity& m) {
if (unitOfMeasure_ == m.unitOfMeasure_) {
amount_ += m.amount_;
} else if (conversionType == BaseUnitOfMeasureConversion) {
convertToBase(*this);
Quantity tmp = m;
convertToBase(tmp);
*this += tmp;
} else if (conversionType == AutomatedConversion) {
Quantity tmp = m;
convertTo(tmp, unitOfMeasure_);
*this += tmp;
} else {
QL_FAIL("unitOfMeasure mismatch and no conversion specified");
}
return *this;
}
Quantity& Quantity::operator-=(const Quantity& m) {
if (unitOfMeasure_ == m.unitOfMeasure_) {
amount_ -= m.amount_;
} else if (conversionType == BaseUnitOfMeasureConversion) {
convertToBase(*this);
Quantity tmp = m;
convertToBase(tmp);
*this -= tmp;
} else if (conversionType == AutomatedConversion) {
Quantity tmp = m;
convertTo(tmp, unitOfMeasure_);
*this -= tmp;
} else {
QL_FAIL("unitOfMeasure mismatch and no conversion specified");
}
return *this;
}
Real operator/(const Quantity& m1, const Quantity& m2) {
if (m1.unitOfMeasure() == m2.unitOfMeasure()) {
return m1.amount()/m2.amount();
} else if (Quantity::conversionType
== Quantity::BaseUnitOfMeasureConversion) {
Quantity tmp1 = m1;
convertToBase(tmp1);
Quantity tmp2 = m2;
convertToBase(tmp2);
return tmp1/tmp2;
} else if (Quantity::conversionType == Quantity::AutomatedConversion) {
Quantity tmp = m2;
convertTo(tmp, m1.unitOfMeasure());
return m1/tmp;
} else {
QL_FAIL("unitOfMeasure mismatch and no conversion specified");
}
}
bool operator==(const Quantity& m1, const Quantity& m2) {
if (m1.unitOfMeasure() == m2.unitOfMeasure()) {
return m1.amount() == m2.amount();
} else if (Quantity::conversionType
== Quantity::BaseUnitOfMeasureConversion) {
Quantity tmp1 = m1;
convertToBase(tmp1);
Quantity tmp2 = m2;
convertToBase(tmp2);
return tmp1 == tmp2;
} else if (Quantity::conversionType
== Quantity::AutomatedConversion) {
Quantity tmp = m2;
convertTo(tmp, m1.unitOfMeasure());
return m1 == tmp;
} else {
QL_FAIL("unitOfMeasure mismatch and no conversion specified");
}
}
bool operator<(const Quantity& m1, const Quantity& m2) {
if (m1.unitOfMeasure() == m2.unitOfMeasure()) {
return m1.amount() < m2.amount();
} else if (Quantity::conversionType
== Quantity::BaseUnitOfMeasureConversion) {
Quantity tmp1 = m1;
convertToBase(tmp1);
Quantity tmp2 = m2;
convertToBase(tmp2);
return tmp1 < tmp2;
} else if (Quantity::conversionType == Quantity::AutomatedConversion) {
Quantity tmp = m2;
convertTo(tmp, m1.unitOfMeasure());
return m1 < tmp;
} else {
QL_FAIL("unitOfMeasure mismatch and no conversion specified");
}
}
bool operator<=(const Quantity& m1, const Quantity& m2) {
if (m1.unitOfMeasure() == m2.unitOfMeasure()) {
return m1.amount() <= m2.amount();
} else if (Quantity::conversionType
== Quantity::BaseUnitOfMeasureConversion) {
Quantity tmp1 = m1;
convertToBase(tmp1);
Quantity tmp2 = m2;
convertToBase(tmp2);
return tmp1 <= tmp2;
} else if (Quantity::conversionType == Quantity::AutomatedConversion) {
Quantity tmp = m2;
convertTo(tmp, m1.unitOfMeasure());
return m1 <= tmp;
} else {
QL_FAIL("unitOfMeasure mismatch and no conversion specified");
}
}
bool close(const Quantity& m1, const Quantity& m2, Size n) {
if (m1.unitOfMeasure() == m2.unitOfMeasure()) {
return close(m1.amount(),m2.amount(),n);
} else if (Quantity::conversionType
== Quantity::BaseUnitOfMeasureConversion) {
Quantity tmp1 = m1;
convertToBase(tmp1);
Quantity tmp2 = m2;
convertToBase(tmp2);
return close(tmp1,tmp2,n);
} else if (Quantity::conversionType == Quantity::AutomatedConversion) {
Quantity tmp = m2;
convertTo(tmp, m1.unitOfMeasure());
return close(m1,tmp,n);
} else {
QL_FAIL("unitOfMeasure mismatch and no conversion specified");
}
}
bool close_enough(const Quantity& m1, const Quantity& m2, Size n) {
if (m1.unitOfMeasure() == m2.unitOfMeasure()) {
return close_enough(m1.amount(),m2.amount(),n);
} else if (Quantity::conversionType
== Quantity::BaseUnitOfMeasureConversion) {
Quantity tmp1 = m1;
convertToBase(tmp1);
Quantity tmp2 = m2;
convertToBase(tmp2);
return close_enough(tmp1,tmp2,n);
} else if (Quantity::conversionType == Quantity::AutomatedConversion) {
Quantity tmp = m2;
convertTo(tmp, m1.unitOfMeasure());
return close_enough(m1,tmp,n);
} else {
QL_FAIL("unitOfMeasure mismatch and no conversion specified");
}
}
std::ostream& operator<<(std::ostream& out, const Quantity& quantity) {
return out << quantity.commodityType_.code() << " "
<< quantity.amount_ << " " << quantity.unitOfMeasure_.code();
}
}
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