commons-numbers-fraction/src/main/java/org/apache/commons/numbers/fraction/BigFraction.java [171:190]:
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        final long maxDen = Math.abs((long) maxDenominator);

        long p0 = 1;
        long q0 = 0;
        long p1 = a0;
        long q1 = 1;

        long p2;
        long q2;

        int n = 0;
        boolean stop = false;
        do {
            ++n;
            final double r1 = 1.0 / (r0 - a0);
            final long a1 = (long) Math.floor(r1);
            p2 = (a1 * p1) + p0;
            q2 = (a1 * q1) + q0;
            if (Long.compareUnsigned(p2, OVERFLOW) > 0 ||
                Long.compareUnsigned(q2, OVERFLOW) > 0) {
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commons-numbers-fraction/src/main/java/org/apache/commons/numbers/fraction/Fraction.java [194:214]:
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        final long maxDen = Math.abs((long) maxDenominator);

        long p0 = 1;
        long q0 = 0;
        long p1 = a0;
        long q1 = 1;

        long p2;
        long q2;

        int n = 0;
        boolean stop = false;
        do {
            ++n;
            final double r1 = 1.0 / (r0 - a0);
            final long a1 = (long) Math.floor(r1);
            p2 = (a1 * p1) + p0;
            q2 = (a1 * q1) + q0;

            if (Long.compareUnsigned(p2, OVERFLOW) > 0 ||
                Long.compareUnsigned(q2, OVERFLOW) > 0) {
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