Provided by: libstdc++-13-doc_13.2.0-23ubuntu4_all
NAME
std::discard_block_engine< _RandomNumberEngine, __p, __r >
SYNOPSIS
#include <random> Public Types template<typename _Sseq > using _If_seed_seq = __detail::_If_seed_seq_for< _Sseq, discard_block_engine, result_type > typedef _RandomNumberEngine::result_type result_type Public Member Functions discard_block_engine () Constructs a default discard_block_engine engine. discard_block_engine (_RandomNumberEngine &&__rng) Move constructs a discard_block_engine engine. template<typename _Sseq , typename = _If_seed_seq<_Sseq>> discard_block_engine (_Sseq &__q) Generator construct a discard_block_engine engine. discard_block_engine (const _RandomNumberEngine &__rng) Copy constructs a discard_block_engine engine. discard_block_engine (result_type __s) Seed constructs a discard_block_engine engine. const _RandomNumberEngine & base () const noexcept Gets a const reference to the underlying generator engine object. void discard (unsigned long long __z) Discard a sequence of random numbers. result_type operator() () Gets the next value in the generated random number sequence. void seed () Reseeds the discard_block_engine object with the default seed for the underlying base class generator engine. template<typename _Sseq > _If_seed_seq< _Sseq > seed (_Sseq &__q) Reseeds the discard_block_engine object with the given seed sequence. void seed (result_type __s) Reseeds the discard_block_engine object with the default seed for the underlying base class generator engine. Static Public Member Functions static constexpr result_type max () Gets the maximum value in the generated random number range. static constexpr result_type min () Gets the minimum value in the generated random number range. Static Public Attributes static constexpr size_t block_size static constexpr size_t used_block Friends template<typename _RandomNumberEngine1 , size_t __p1, size_t __r1, typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const std::discard_block_engine< _RandomNumberEngine1, __p1, __r1 > &__x) Inserts the current state of a discard_block_engine random number generator engine __x into the output stream __os. bool operator== (const discard_block_engine &__lhs, const discard_block_engine &__rhs) Compares two discard_block_engine random number generator objects of the same type for equality. template<typename _RandomNumberEngine1 , size_t __p1, size_t __r1, typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, std::discard_block_engine< _RandomNumberEngine1, __p1, __r1 > &__x) Extracts the current state of a % subtract_with_carry_engine random number generator engine __x from the input stream __is.
Detailed Description
template<typename _RandomNumberEngine, size_t __p, size_t __r> class std::discard_block_engine< _RandomNumberEngine, __p, __r >"Produces random numbers from some base engine by discarding blocks of data. Precondition $ 0 r p $.RE Since C++11
Member Typedef Documentation
template<typename _RandomNumberEngine , size_t __p, size_t __r> typedef _RandomNumberEngine::result_type std::discard_block_engine< _RandomNumberEngine, __p, __r >::result_type The type of the generated random value.
Constructor & Destructor Documentation
template<typename _RandomNumberEngine , size_t __p, size_t __r> std::discard_block_engine< _RandomNumberEngine, __p, __r >::discard_block_engine () [inline] Constructs a default discard_block_engine engine. The underlying engine is default constructed as well. template<typename _RandomNumberEngine , size_t __p, size_t __r> std::discard_block_engine< _RandomNumberEngine, __p, __r >::discard_block_engine (const _RandomNumberEngine & __rng) [inline], [explicit] Copy constructs a discard_block_engine engine. Copies an existing base class random number generator. Parameters __rng An existing (base class) engine object. template<typename _RandomNumberEngine , size_t __p, size_t __r> std::discard_block_engine< _RandomNumberEngine, __p, __r >::discard_block_engine (_RandomNumberEngine && __rng) [inline], [explicit] Move constructs a discard_block_engine engine. Copies an existing base class random number generator. Parameters __rng An existing (base class) engine object. template<typename _RandomNumberEngine , size_t __p, size_t __r> std::discard_block_engine< _RandomNumberEngine, __p, __r >::discard_block_engine (result_type __s) [inline], [explicit] Seed constructs a discard_block_engine engine. Constructs the underlying generator engine seeded with __s. Parameters __s A seed value for the base class engine. template<typename _RandomNumberEngine , size_t __p, size_t __r> template<typename _Sseq , typename = _If_seed_seq<_Sseq>> std::discard_block_engine< _RandomNumberEngine, __p, __r >::discard_block_engine (_Sseq & __q) [inline], [explicit] Generator construct a discard_block_engine engine. Parameters __q A seed sequence.
Member Function Documentation
template<typename _RandomNumberEngine , size_t __p, size_t __r> const _RandomNumberEngine & std::discard_block_engine< _RandomNumberEngine, __p, __r >::base () const [inline], [noexcept] Gets a const reference to the underlying generator engine object. template<typename _RandomNumberEngine , size_t __p, size_t __r> void std::discard_block_engine< _RandomNumberEngine, __p, __r >::discard (unsigned long long __z) [inline] Discard a sequence of random numbers. template<typename _RandomNumberEngine , size_t __p, size_t __r> static constexpr result_type std::discard_block_engine< _RandomNumberEngine, __p, __r >::max () [inline], [static], [constexpr] Gets the maximum value in the generated random number range. template<typename _RandomNumberEngine , size_t __p, size_t __r> static constexpr result_type std::discard_block_engine< _RandomNumberEngine, __p, __r >::min () [inline], [static], [constexpr] Gets the minimum value in the generated random number range. template<typename _RandomNumberEngine , size_t __p, size_t __r> discard_block_engine< _RandomNumberEngine, __p, __r >::result_type std::discard_block_engine< _RandomNumberEngine, __p, __r >::operator() () Gets the next value in the generated random number sequence. template<typename _RandomNumberEngine , size_t __p, size_t __r> void std::discard_block_engine< _RandomNumberEngine, __p, __r >::seed () [inline] Reseeds the discard_block_engine object with the default seed for the underlying base class generator engine. template<typename _RandomNumberEngine , size_t __p, size_t __r> template<typename _Sseq > _If_seed_seq< _Sseq > std::discard_block_engine< _RandomNumberEngine, __p, __r >::seed (_Sseq & __q) [inline] Reseeds the discard_block_engine object with the given seed sequence. Parameters __q A seed generator function. template<typename _RandomNumberEngine , size_t __p, size_t __r> void std::discard_block_engine< _RandomNumberEngine, __p, __r >::seed (result_type __s) [inline] Reseeds the discard_block_engine object with the default seed for the underlying base class generator engine.
Friends And Related Symbol Documentation
template<typename _RandomNumberEngine , size_t __p, size_t __r> template<typename _RandomNumberEngine1 , size_t __p1, size_t __r1, typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > & __os, const std::discard_block_engine< _RandomNumberEngine1, __p1, __r1 > & __x) [friend] Inserts the current state of a discard_block_engine random number generator engine __x into the output stream __os. Parameters __os An output stream. __x A discard_block_engine random number generator engine. Returns The output stream with the state of __x inserted or in an error state. template<typename _RandomNumberEngine , size_t __p, size_t __r> bool operator== (const discard_block_engine< _RandomNumberEngine, __p, __r > & __lhs, const discard_block_engine< _RandomNumberEngine, __p, __r > & __rhs) [friend] Compares two discard_block_engine random number generator objects of the same type for equality. Parameters __lhs A discard_block_engine random number generator object. __rhs Another discard_block_engine random number generator object. Returns true if the infinite sequences of generated values would be equal, false otherwise. template<typename _RandomNumberEngine , size_t __p, size_t __r> template<typename _RandomNumberEngine1 , size_t __p1, size_t __r1, typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > & __is, std::discard_block_engine< _RandomNumberEngine1, __p1, __r1 > & __x) [friend] Extracts the current state of a % subtract_with_carry_engine random number generator engine __x from the input stream __is. Parameters __is An input stream. __x A discard_block_engine random number generator engine. Returns The input stream with the state of __x extracted or in an error state.
Author
Generated automatically by Doxygen for libstdc++ from the source code. std::discardiblock+engine< _RandomNumberEngine, __p, __r >(3cxx)