53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
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/*-----------------------------------------------------------------------------
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| Copyright (c) 2013-2017, Nucleic Development Team.
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| Distributed under the terms of the Modified BSD License.
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| The full license is in the file LICENSE, distributed with this software.
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|----------------------------------------------------------------------------*/
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#pragma once
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#include <vector>
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#include "term.h"
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namespace kiwi
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{
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class Expression
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{
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public:
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Expression(double constant = 0.0) : m_constant(constant) {}
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Expression(const Term &term, double constant = 0.0) : m_terms(1, term), m_constant(constant) {}
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Expression(const std::vector<Term> &terms, double constant = 0.0) : m_terms(terms), m_constant(constant) {}
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~Expression() {}
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const std::vector<Term> &terms() const
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{
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return m_terms;
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}
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double constant() const
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{
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return m_constant;
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}
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double value() const
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{
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typedef std::vector<Term>::const_iterator iter_t;
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double result = m_constant;
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iter_t end = m_terms.end();
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for (iter_t it = m_terms.begin(); it != end; ++it)
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result += it->value();
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return result;
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}
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private:
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std::vector<Term> m_terms;
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double m_constant;
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};
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} // namespace kiwi
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