public BigFraction pow()

in commons-numbers-fraction/src/main/java/org/apache/commons/numbers/fraction/BigFraction.java [968:999]

• 27 lines of code
• 8 McCabe index (conditional complexity)

    public BigFraction pow(final int exponent) {
        if (exponent == 1) {
            return this;
        }
        if (exponent == 0) {
            return ONE;
        }
        if (isZero()) {
            if (exponent < 0) {
                throw new FractionException(FractionException.ERROR_ZERO_DENOMINATOR);
            }
            return ZERO;
        }
        if (exponent > 0) {
            return new BigFraction(numerator.pow(exponent),
                                   denominator.pow(exponent));
        }
        if (exponent == -1) {
            return this.reciprocal();
        }
        if (exponent == Integer.MIN_VALUE) {
            // MIN_VALUE can't be negated
            return new BigFraction(denominator.pow(Integer.MAX_VALUE).multiply(denominator),
                                   numerator.pow(Integer.MAX_VALUE).multiply(numerator));
        }
        // Note: Raise the BigIntegers to the power and then reduce.
        // The supported range for BigInteger is currently
        // +/-2^(Integer.MAX_VALUE) exclusive thus larger
        // exponents (long, BigInteger) are currently not supported.
        return new BigFraction(denominator.pow(-exponent),
                               numerator.pow(-exponent));
    }