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108 lines
3.8 KiB
108 lines
3.8 KiB
#ifndef STORM_UTILITY_CONSTANTSCOMPARATOR_H_
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#define STORM_UTILITY_CONSTANTSCOMPARATOR_H_
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#include "storm/adapters/RationalFunctionAdapter.h"
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namespace storm {
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namespace utility {
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// A class that can be used for comparing constants.
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template<typename ValueType>
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class ConstantsComparator {
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public:
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// This needs to be in here, otherwise the template specializations are not used properly.
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ConstantsComparator() = default;
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bool isOne(ValueType const& value) const;
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bool isZero(ValueType const& value) const;
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bool isEqual(ValueType const& value1, ValueType const& value2) const;
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bool isConstant(ValueType const& value) const;
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bool isInfinity(ValueType const& value) const;
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bool isLess(ValueType const& value1, ValueType const& value2) const;
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};
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// For floats we specialize this class and consider the comparison modulo some predefined precision.
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template<>
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class ConstantsComparator<float> {
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public:
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ConstantsComparator();
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ConstantsComparator(float precision);
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bool isOne(float const& value) const;
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bool isZero(float const& value) const;
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bool isEqual(float const& value1, float const& value2) const;
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bool isConstant(float const& value) const;
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bool isInfinity(float const& value) const;
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bool isLess(float const& value1, float const& value2) const;
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private:
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// The precision used for comparisons.
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float precision;
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};
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// For doubles we specialize this class and consider the comparison modulo some predefined precision.
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template<>
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class ConstantsComparator<double> {
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public:
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ConstantsComparator();
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ConstantsComparator(double precision, bool relative = false);
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bool isOne(double const& value) const;
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bool isZero(double const& value) const;
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bool isInfinity(double const& value) const;
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bool isEqual(double const& value1, double const& value2) const;
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bool isConstant(double const& value) const;
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bool isLess(double const& value1, double const& value2) const;
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private:
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// The precision used for comparisons.
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double precision;
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// Whether to use relative comparison for equality.
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bool relative;
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};
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// For rational numbers we specialize this class and consider the comparison modulo some predefined precision.
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template<>
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class ConstantsComparator<storm::RationalNumber> {
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public:
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ConstantsComparator();
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ConstantsComparator(storm::RationalNumber precision, bool relative);
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bool isOne(storm::RationalNumber const& value) const;
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bool isZero(storm::RationalNumber const& value) const;
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bool isEqual(storm::RationalNumber const& value1, storm::RationalNumber const& value2) const;
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bool isConstant(storm::RationalNumber const& value) const;
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bool isInfinity(storm::RationalNumber const& value) const;
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bool isLess(storm::RationalNumber const& value1, storm::RationalNumber const& value2) const;
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private:
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storm::RationalNumber precision;
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bool relative;
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};
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}
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}
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#endif /* STORM_UTILITY_CONSTANTSCOMPARATOR_H_ */
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