public double density()

in commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/FDistribution.java [142:155]

• 12 lines of code
• 6 McCabe index (conditional complexity)

    public double density(double x) {
        if (x <= SUPPORT_LO ||
            x >= SUPPORT_HI) {
            // Special case x=0:
            // PDF reduces to the term x^(df1 / 2 - 1) multiplied by a scaling factor
            if (x == SUPPORT_LO && numeratorDegreesOfFreedom <= 2) {
                return numeratorDegreesOfFreedom == 2 ?
                    1 :
                    Double.POSITIVE_INFINITY;
            }
            return 0;
        }
        return computeDensity(x, false);
    }