private int inverseUpper()

in commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/HypergeometricDistribution.java [384:402]

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

    private int inverseUpper(double p, double q, boolean complement) {
        // Sum from the upper bound (computing the sf)
        int x = upperBound;
        final DoublePredicate test = complement ?
            i -> i < q :
            i -> 1 - i > p;
        double sf = 0;
        while (test.test(sf)) {
            sf += Math.exp(computeLogProbability(x));
            x--;
        }
        // Here either sf(x) >= q, or cdf(x) <= p
        // Ensure sf(x) <= q, or cdf(x) >= p
        if (complement && sf > q ||
            !complement && 1 - sf < p) {
            x++;
        }
        return x;
    }