Examples of org.apache.commons.math.complex.Complex.subtract()

Class org.apache.commons.math.complex.Complex

Examples of org.apache.commons.math.complex.Complex.subtract()

org.apache.commons.math.complex.Complex.subtract()
Return the difference between this complex number and the given complex number.
Uses the definitional formula
```
 (a + bi) - (c + di) = (a-c) + (b-d)i 
```
If either this or rhs has a NaN value in either part, {@link #NaN} is returned; otherwise inifinite and NaN values arereturned in the parts of the result according to the rules for {@link java.lang.Double} arithmetic.
@param rhs the other complex number @return the complex number difference @throws NullPointerException if rhs is null

            C = f[i].subtract(f[i+1]);
            D = f[i+2].subtract(f[i+3]);
            E = C.add(D.multiply(Complex.I));
            F = C.subtract(D.multiply(Complex.I));
            f[i] = A.add(B);
            f[i+2] = A.subtract(B);
            // omegaCount indicates forward or inverse transform
            f[i+1] = roots.isForward() ? F : E;
            f[i+3] = roots.isForward() ? E : F;
        }

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