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package bisection;
/**
* Represents a 'dual' number.
*
* Think imaginary numbers, where instead of i, we add a value d such that d^2 =
* 0.
*/
public class Dual {
/**
* The real part of the dual number.
*/
public double real;
/**
* The dual part of the dual number.
*/
public double dual;
/**
* Create a new dual with both parts zero.
*/
public Dual() {
real = 0;
dual = 0;
}
/**
* Create a new dual number with a zero dual part.
*
* @param real
* The real part of the number.
*/
public Dual(double real) {
this.real = real;
this.dual = 0;
}
/**
* Create a new dual number with a specified dual part.
*
* @param real
* The real part of the number.
* @param dual
* The dual part of the number.
*/
public Dual(double real, double dual) {
this.real = real;
this.dual = dual;
}
@Override
public String toString() {
return String.format("<%f, %f>", real, dual);
}
}
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