std::discard_block_engine< _RandomNumberEngine, __p, __r >(3)Library Functions Manualstd::discard_block_engine< _RandomNumberEngine, __p, __r >(3)
NAME
std::discard_block_engine< _RandomNumberEngine, __p, __r > -
SYNOPSIS
Public Types
typedef
_RandomNumberEngine::result_type result_type"
Public Member Functions
discard_block_engine ()
discard_block_engine (const _RandomNumberEngine &__rng)
discard_block_engine (_RandomNumberEngine &&__rng)
discard_block_engine (result_type __s)
template<typename _Sseq , typename = typename std::enable_if<!std::is_same<_Sseq, discard_block_engine>::value &&
!std::is_same<_Sseq, _RandomNumberEngine>::value> ::type> discard_block_engine (_Sseq &__q)
const _RandomNumberEngine & base () const noexcept
void discard (unsigned long long __z)
result_type operator() ()
void seed ()
void seed (result_type __s)
template<typename _Sseq > void seed (_Sseq &__q)
Static Public Member Functions
static constexpr result_type max ()
static constexpr result_type min ()
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)"
bool operator== (const discard_block_engine &__lhs, const discard_block_engine &__rhs)
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)"
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.
0 <= __r <= __p
Definition at line 854 of file random.h.
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.
Definition at line 857 of file random.h.
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.
Definition at line 872 of file random.h.
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.
Definition at line 882 of file random.h.
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.
Definition at line 892 of file random.h.
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.
Definition at line 902 of file random.h.
template<typename _RandomNumberEngine, size_t __p, size_t __r> template<typename _Sseq , typename = typename
std::enable_if<!std::is_same<_Sseq, discard_block_engine>::value && !std::is_same<_Sseq, _RandomNumberEngine>::value> ::type>
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.
Definition at line 915 of file random.h.
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.
Definition at line 959 of file random.h.
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.
Definition at line 980 of file random.h.
template<typename _RandomNumberEngine, size_t __p, size_t __r> static constexpr result_type std::discard_block_engine< _RandomNumberEngine,
__p, __r >::max () [inline], [static]
Gets the maximum value in the generated random number range.
Definition at line 973 of file random.h.
References std::max().
template<typename _RandomNumberEngine, size_t __p, size_t __r> static constexpr result_type std::discard_block_engine< _RandomNumberEngine,
__p, __r >::min () [inline], [static]
Gets the minimum value in the generated random number range.
Definition at line 966 of file random.h.
References std::min().
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.
Definition at line 688 of file bits/random.tcc.
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.
Definition at line 924 of file random.h.
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.
Definition at line 935 of file random.h.
template<typename _RandomNumberEngine, size_t __p, size_t __r> template<typename _Sseq > void 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.
Definition at line 948 of file random.h.
Friends And Related Function 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.
Definition at line 1004 of file random.h.
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
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libstdc++ Tue Jun 10 2014 std::discard_block_engine< _RandomNumberEngine, __p, __r >(3)