This is an implementation of a compile time rational number, where static_rational<N,D> represents a rational number with numerator N and denominator D. More...

#include <static_rational.hpp>

Public Types
typedef detail::static_rational_tag	tag

typedef static_rational< N, D >	this_type
	INTERNAL ONLY. More...

typedef static_rational < Numerator, Denominator >	type
	static_rational<N,D> reduced by GCD More...

Public Member Functions
	static_rational ()

Static Public Member Functions
static integer_type	numerator ()

static integer_type	denominator ()

Static Public Attributes
static const integer_type	Numerator = N/den

static const integer_type	Denominator = D/den

Detailed Description

template<integer_type N, integer_type D = 1>
class boost::units::static_rational< N, D >

This is an implementation of a compile time rational number, where static_rational<N,D> represents a rational number with numerator N and denominator D.

Because of the potential for ambiguity arising from multiple equivalent values of static_rational (e.g. static_rational<6,2>==static_rational<3>), static rationals should always be accessed through static_rational<N,D>::type. Template specialization prevents instantiation of zero denominators (i.e. static_rational<N,0>). The following compile-time arithmetic operators are provided for static_rational variables only (no operators are defined between long and static_rational):

mpl::negate
mpl::plus
mpl::minus
mpl::times
mpl::divides

Neither static_power nor static_root are defined for static_rational. This is because template types may not be floating point values, while powers and roots of rational numbers can produce floating point values.