Fraction type¶

class fraction¶

A fraction type to support the Numeric_Value Unicode property. This is merely a numerator/denominator pair and does not perform any reduction nor provides any arithmetic functionality.

constexpr fraction() noexcept¶: Creates a new fraction representing 0/1.

constexpr fraction(long numerator, long denominator) noexcept¶

Creates a new fraction representing numerator/denominator.

Parameters:	numerator – the fraction’s numerator denominator – the fraction’s denominator
Requires:	`denominator` is not zero

constexpr long numerator() const noexcept¶

Returns:	the numerator of this fraction

constexpr long denominator() const noexcept¶

Returns:	the denominator of this fraction

constexpr double as_double() const noexcept¶

Returns:	the result of dividing the numerator by the denominator of this fraction, as a `double`.

Note

This feature is only available if the OGONEK_USE_BOOST macro is set.

constexpr fraction(boost::rational<long> r) noexcept¶: Creates a new fraction from a boost::rational<long>.

constexpr operator boost::rational<long>() const noexcept¶

Returns:	a `boost::rational<long>` equivalent to this fraction.

constexpr bool operator==(fraction lhs, fraction rhs) noexcept¶

Compares two fractions for equality.

Returns:	`true` if both fractions have the same numerator and the same denominator; `false` otherwise.

constexpr bool operator!=(fraction lhs, fraction rhs) noexcept¶

Compares two fractions for inequality.

Returns:	`true` if both fractions have the different numerators or different denominators; `false` otherwise.