commons-statistics-inference/src/main/java/org/apache/commons/statistics/inference/DD.java [876:887]:
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        final double r = q.hi;
        final double rr = q.lo;
        // next quotient q1 = r0 / y
        final double q1 = r / y;
        // remainder r1 = r0 - q1 * y
        multiply(y, yy, q1, q);
        add(-q.hi, -q.lo, r, rr, q);
        // next quotient q2 = r1 / y
        final double q2 = q.hi / y;
        // Collect (q0, q1, q2)
        fastTwoSum(q0, q1, q);
        return twoSum(q.hi, q.lo + q2, q);
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commons-statistics-inference/src/main/java/org/apache/commons/statistics/inference/DD.java [907:918]:
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        final double r = q.hi;
        final double rr = q.lo;
        // next quotient q1 = r0 / y
        final double q1 = r / y;
        // remainder r1 = r0 - q1 * y
        multiply(y, yy, q1, q);
        add(-q.hi, -q.lo, r, rr, q);
        // next quotient q2 = r1 / y
        final double q2 = q.hi / y;
        // Collect (q0, q1, q2)
        fastTwoSum(q0, q1, q);
        return twoSum(q.hi, q.lo + q2, q);
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