/**
* Calculates {@link BigComplex} x to the power of {@link BigDecimal} y (x<sup>y</sup>).
*
* @param x the {@link BigComplex} value to take to the power
* @param y the {@link BigDecimal} value to serve as exponent
* @param mathContext the {@link MathContext} used for the result
* @return the calculated x to the power of y with the precision specified in the <code>mathContext</code>
*/
public static BigComplex pow(this BigComplex x, BigDecimal y, MathContext mathContext)
{
MathContext mc = new MathContext(mathContext.getPrecision() + 4, mathContext.getRoundingMode());
BigDecimal angleTimesN = x.angle(mc).multiply(y, mc);
return(BigComplex.valueOf(
BigDecimalMath.cos(angleTimesN, mc),
BigDecimalMath.sin(angleTimesN, mc)).multiply(BigDecimalMath.pow(x.abs(mc), y, mc), mc).round(mathContext));
}