#include <Equation.h>

Collaboration diagram for ADBLib::Equation:

Public Member Functions
	Equation ()

	Equation (string newEqu)
	Constructor. Lets you parse a new equation upon construction. More...

void	parse (string newEqu)
	Parses an equation into more easily processable form (RPN). Write equations like you would in C++, but with ^ for exponents and forward slashes ONLY for division. More...

long double	evaluate (long double value)
	Evaluate the parsed equation, replacing "x" with the given value. More...

Protected Member Functions
tokenType	getTType (string::iterator iter) const
	Determines what type of token a given character is. More...

operations	getOType (string::iterator iter) const
	Converts a character as an operator to one of the enumerated operations. More...

long double	getValue (string::iterator &iter, string &equation) const
	Given an iterator to the start of a number, converts the string number to a long double number, and advances the iterator to the end of the number. More...

Protected Attributes
queue< class Token >	outputQueue

Detailed Description

Equation class for handling simple equations (PEMDAS) when the equation is not known at compile-time.

Exceptions

parse_error

Constructor & Destructor Documentation

ADBLib::Equation::Equation ( )

inline

ADBLib::Equation::Equation ( string newEqu )

Constructor. Lets you parse a new equation upon construction.

Parameters

newEqu An equation as a string.

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Member Function Documentation

long double ADBLib::Equation::evaluate ( long double value )

Evaluate the parsed equation, replacing "x" with the given value.

Parameters

value The value to substitue "x" for.

Returns: The value of the evaluated equation

Exceptions

parse_error

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operations ADBLib::Equation::getOType ( string::iterator iter ) const

inlineprotected

Converts a character as an operator to one of the enumerated operations.

Parameters

iter	An iterator to a character in an equation.

Returns: The type of operator this is.

Exceptions

parse_error

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tokenType ADBLib::Equation::getTType ( string::iterator iter ) const

inlineprotected

Determines what type of token a given character is.

Parameters

iter	An iterator to a character in an equation.

Returns: The type of token this is (variable, value, operator).

Exceptions

parse_error

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long double ADBLib::Equation::getValue	(	string::iterator &	iter,
		string &	equation
	)		const

protected

Given an iterator to the start of a number, converts the string number to a long double number, and advances the iterator to the end of the number.

Parameters

iter	An iterator to the start of a number in the sequence.
equation	An equation as a string.

Returns: The value of the number.

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void ADBLib::Equation::parse ( string newEqu )

Parses an equation into more easily processable form (RPN). Write equations like you would in C++, but with ^ for exponents and forward slashes ONLY for division.

Parameters

newEqu An equation as a string.

Exceptions

parse_error