fun Namespace Reference

Classes
struct	Fraction
	Fraction. More...

Functions
template<typename T >
CONSTEXPR14 auto	abs (const T &a) -> typename std::enable_if< std::is_unsigned< T >::value, T >::type
	Absolute value for unsigned types.
template<typename Mn >
CONSTEXPR14 auto	gcd_recur (const Mn &_m, const Mn &_n) -> Mn
	Greatest common divisor (recursive)
template<typename Mn >
CONSTEXPR14 auto	gcd (const Mn &_m, const Mn &_n) -> Mn
	Greatest common divisor.
template<typename Mn >
CONSTEXPR14 auto	lcm (const Mn &_m, const Mn &_n) -> Mn
	Least common multiple.

Function Documentation

abs()

template<typename T >

CONSTEXPR14 auto fun::abs

(

const T &

a

)

-> typename std::enable_if<std::is_unsigned<T>::value, T>::type

Absolute value for unsigned types.

For unsigned types, the absolute value is the number itself.

Template Parameters

T	The numeric type

Parameters

[in]

a

The value to compute absolute value of

Returns

T The absolute value

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Absolute value for signed types. For signed types, returns the negative value if the input is negative.

gcd()

template<typename Mn >

CONSTEXPR14 auto fun::gcd	(	const Mn &	_m,
		const Mn &	_n
	)		-> Mn

Greatest common divisor.

Computes the greatest common divisor of two numbers.

Template Parameters

Mn	The numeric type

Parameters

[in]	_m	First number
[in]	_n	Second number

Returns

Mn The greatest common divisor

gcd_recur()

template<typename Mn >

CONSTEXPR14 auto fun::gcd_recur	(	const Mn &	_m,
		const Mn &	_n
	)		-> Mn

Greatest common divisor (recursive)

Computes the greatest common divisor of two numbers using Euclidean algorithm.

Template Parameters

Mn	The numeric type

Parameters

[in]	_m	First number
[in]	_n	Second number

Returns

Mn The greatest common divisor

lcm()

template<typename Mn >

CONSTEXPR14 auto fun::lcm	(	const Mn &	_m,
		const Mn &	_n
	)		-> Mn

Least common multiple.

Template Parameters

Mn

Parameters

[in]	_m
[in]	_n

Returns

Mn