boostorg/rational — pull request #1 by jzmaddock (2014-07-28 08:51:05+00:00)
Title: Update rational.hpp

Access to the numerator and denominator is unnecessarily inefficient when using rational with multiprecision types (ie where copying is relatively expensive), this change returns const-references to numerator and denominator. In all other respects existing code should be uneffected by this change.