std::tr1::uniform_int.3cxx

Langue: en

Version: 341165 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

std::tr1::uniform_int -

Uniform discrete distribution for random numbers. A discrete random distribution on the range $[min, max]$ with equal probability throughout the range.

SYNOPSIS


Public Types


typedef _IntType input_type

typedef _IntType result_type

Public Member Functions


result_type max () const

result_type min () const

template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator &__urng)

template<typename _UniformRandomNumberGenerator > result_type operator() (_UniformRandomNumberGenerator &__urng, result_type __n)

void reset ()

uniform_int (_IntType __min=0, _IntType __max=9)

Friends


template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const uniform_int< _IntType1 > &__x)

template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, uniform_int< _IntType1 > &__x)

Detailed Description

template<typename _IntType = int> class std::tr1::uniform_int< _IntType >

Uniform discrete distribution for random numbers. A discrete random distribution on the range $[min, max]$ with equal probability throughout the range.

Definition at line 1560 of file tr1_impl/random.

Member Typedef Documentation

template<typename _IntType = int> typedef _IntType std::tr1::uniform_int< _IntType >::input_typeThe type of the parameters of the distribution.

Definition at line 1566 of file tr1_impl/random.

template<typename _IntType = int> typedef _IntType std::tr1::uniform_int< _IntType >::result_typeThe type of the range of the distribution.

Definition at line 1568 of file tr1_impl/random.

Constructor & Destructor Documentation

template<typename _IntType = int> std::tr1::uniform_int< _IntType >::uniform_int (_IntType __min = 0, _IntType __max = 9) [inline, explicit]Constructs a uniform distribution object.

Definition at line 1575 of file tr1_impl/random.

Member Function Documentation

template<typename _IntType = int> result_type std::tr1::uniform_int< _IntType >::max () const [inline]Gets the inclusive upper bound of the distribution range.

Definition at line 1592 of file tr1_impl/random.

template<typename _IntType = int> result_type std::tr1::uniform_int< _IntType >::min () const [inline]Gets the inclusive lower bound of the distribution range.

Definition at line 1585 of file tr1_impl/random.

template<typename _IntType = int> template<typename _UniformRandomNumberGenerator > result_type std::tr1::uniform_int< _IntType >::operator() (_UniformRandomNumberGenerator & __urng) [inline]Gets a uniformly distributed random number in the range $(min, max)$.

Definition at line 1609 of file tr1_impl/random.

template<typename _IntType = int> template<typename _UniformRandomNumberGenerator > result_type std::tr1::uniform_int< _IntType >::operator() (_UniformRandomNumberGenerator & __urng, result_type __n) [inline]Gets a uniform random number in the range $[0, n)$.

This function is aimed at use with std::random_shuffle.

Definition at line 1624 of file tr1_impl/random.

template<typename _IntType = int> void std::tr1::uniform_int< _IntType >::reset () [inline]Resets the distribution state.

Does nothing for the uniform integer distribution.

Definition at line 1601 of file tr1_impl/random.

template<typename _IntType = int> template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_ostream<_CharT, _Traits>& operator<< (std::basic_ostream< _CharT, _Traits > & __os, const uniform_int< _IntType1 > & __x) [friend]Inserts a uniform_int random number distribution __x into the output stream os.

Parameters:

__os An output stream.
__x A uniform_int random number distribution.

Returns:

The output stream with the state of __x inserted or in an error state.

template<typename _IntType = int> template<typename _IntType1 , typename _CharT , typename _Traits > std::basic_istream<_CharT, _Traits>& operator>> (std::basic_istream< _CharT, _Traits > & __is, uniform_int< _IntType1 > & __x) [friend]Extracts a uniform_int random number distribution __x from the input stream __is.

Parameters:

__is An input stream.
__x A uniform_int random number generator engine.

Returns:

The input stream with __x extracted or in an error state.

Author

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