Avoid some rational overflow #3382
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Thanks. This is a good change to come out of the Rational/Float promotion experiment in any case. |
StefanKarpinski
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Jun 13, 2013
Avoid some rational overflow
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This change avoids overflow for rational +, -, rem, mod in certain situations where the denominators are large but have significant common divisors. An important special case is when both rationals have the same denominator.
The same technique is also applied to integer lcm.