private static int compare()

in commons-math-legacy-core/src/main/java/org/apache/commons/math4/legacy/core/dfp/Dfp.java [936:987]

• 39 lines of code
• 20 McCabe index (conditional complexity)

    private static int compare(final Dfp a, final Dfp b) {
        // Ignore the sign of zero
        if (a.mant[a.mant.length - 1] == 0 && b.mant[b.mant.length - 1] == 0 &&
            a.nans == FINITE && b.nans == FINITE) {
            return 0;
        }

        if (a.sign != b.sign) {
            if (a.sign == -1) {
                return -1;
            } else {
                return 1;
            }
        }

        // deal with the infinities
        if (a.nans == INFINITE && b.nans == FINITE) {
            return a.sign;
        }

        if (a.nans == FINITE && b.nans == INFINITE) {
            return -b.sign;
        }

        if (a.nans == INFINITE && b.nans == INFINITE) {
            return 0;
        }

        // Handle special case when a or b is zero, by ignoring the exponents
        if (b.mant[b.mant.length - 1] != 0 && a.mant[b.mant.length - 1] != 0) {
            if (a.exp < b.exp) {
                return -a.sign;
            }

            if (a.exp > b.exp) {
                return a.sign;
            }
        }

        // compare the mantissas
        for (int i = a.mant.length - 1; i >= 0; i--) {
            if (a.mant[i] > b.mant[i]) {
                return a.sign;
            }

            if (a.mant[i] < b.mant[i]) {
                return -a.sign;
            }
        }

        return 0;
    }