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Rational

A C++ implementation of a rational number. The template class Rational represents one rational number. It will always be simplified as far as possible, will always indicate sign on the numerator and will always represent 0 as 0/1. For example 2/-8 will be represented as -1/4 and 0/-128 will be represented as 0/1.

Some crude unit tests based on Visual Studios C++ unit test framework are supplied in the folder RationalTest.

Features:

  • Calculations are performed in a larger type than that of the Rational in use (see IntTraits.h). For example, the operation Rational<short> + Rational<short> will perform calculation steps with ints.
  • Construction and assignment from any integer type or Rational<IntType> type.
  • +=, -=, *=, /=, +, -, *, /, ==, !=, <, >, <=, >=, <<, >> operators
  • Postfix and prefix ++ and -- operators
  • int + Rational<IntType> will work as expected
  • Unary operator, r1 = -r2;
  • Explicit conversion to integer types

Build

This project has been built with Microsoft Visual Studio 2012, compiler Nov 2012 CTP, project files are included. It should however be easy to compile it using other C++11 compilers.