| public multiply ( java arg0 ) : global::java.math.BigDecimal | ||
| arg0 | java | |
| return | global::java.math.BigDecimal | |
/**
* Returns a complex number with the specified polar {@link BigDecimal} radius and angle using the specified {@link MathContext}.
*
* @param radius the {@link BigDecimal} radius of the polar representation
* @param angle the {@link BigDecimal} angle in radians of the polar representation
* @param mathContext the {@link MathContext} used to calculate the result
* @return the complex number
*/
public static BigComplex valueOfPolar(BigDecimal radius, BigDecimal angle, MathContext mathContext)
{
if (radius.signum() == 0)
{
return(ZERO);
}
return(valueOf(
radius.multiply(BigDecimalMath.cos(angle, mathContext), mathContext),
radius.multiply(BigDecimalMath.sin(angle, mathContext), mathContext)));
}
/**
* Calculates the addition (+) of this rational number and the specified argument.
*
* <p>The result has no loss of precision.</p>
*
* @param value the rational number to add
* @return the resulting rational number
*/
public BigRational add(BigRational value)
{
if (denominator.equals(value.denominator))
{
return(of(numerator.add(value.numerator), denominator));
}
BigDecimal n = numerator.multiply(value.denominator).add(value.numerator.multiply(denominator));
BigDecimal d = denominator.multiply(value.denominator);
return(of(n, d));
}
private BigRational subtract(BigDecimal value)
{
return(of(numerator.subtract(value.multiply(denominator)), denominator));
}
private BigRational add(BigDecimal value)
{
return(of(numerator.add(value.multiply(denominator)), denominator));
}
/**
* Calculates the multiplication of the given complex value to this complex number.
*
* <p>This methods <strong>does not</strong> modify this instance.</p>
*
* @param value the {@link BigComplex} value to multiply
* @return the calculated {@link BigComplex} result
*/
public BigComplex multiply(BigComplex value)
{
return(valueOf(
re.multiply(value.re).subtract(im.multiply(value.im)),
re.multiply(value.im).add(im.multiply(value.re))));
}