public static TrapezoidalDistribution of()

in commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/TrapezoidalDistribution.java [378:404]

• 25 lines of code
• 7 McCabe index (conditional complexity)

    public static TrapezoidalDistribution of(double a, double b, double c, double d) {
        if (a >= d) {
            throw new DistributionException(DistributionException.INVALID_RANGE_LOW_GTE_HIGH,
                                            a, d);
        }
        if (b < a) {
            throw new DistributionException(DistributionException.TOO_SMALL,
                                            b, a);
        }
        if (c < b) {
            throw new DistributionException(DistributionException.TOO_SMALL,
                                            c, b);
        }
        if (c > d) {
            throw new DistributionException(DistributionException.TOO_LARGE,
                                            c, d);
        }
        // For consistency, delegate to the appropriate simplified distribution.
        // Note: Floating-point equality comparison is intentional.
        if (b == c) {
            return new TriangularTrapezoidalDistribution(a, b, d);
        }
        if (d - a == c - b) {
            return new UniformTrapezoidalDistribution(a, d);
        }
        return new RegularTrapezoidalDistribution(a, b, c, d);
    }