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4.3 Elementary rational functions

Each of the classes cl_RA, cl_I defines the following operations:

cl_I numerator (const type& x)

Returns the numerator of x.

cl_I denominator (const type& x)

Returns the denominator of x.

The numerator and denominator of a rational number are normalized in such a way that they have no factor in common and the denominator is positive.


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