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/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

 Copyright (C) 2006 StatPro Italia srl

 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

 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/instruments/compositeinstrument.hpp>

namespace QuantLib {

00024     void CompositeInstrument::add(
           const boost::shared_ptr<Instrument>& instrument, Real multiplier) {

00031     void CompositeInstrument::subtract(
           const boost::shared_ptr<Instrument>& instrument, Real multiplier) {
        add(instrument, -multiplier);

00036     bool CompositeInstrument::isExpired() const {
        for (const_iterator i=components_.begin(); i!=components_.end(); ++i) {
            if (!i->first->isExpired())
                return false;
        return true;

00044     void CompositeInstrument::performCalculations() const {
        NPV_ = 0.0;
        for (const_iterator i=components_.begin(); i!=components_.end(); ++i) {
            NPV_ += i->second * i->first->NPV();


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