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std::subtract_with_carry_engine< _UIntType, __w, __s, __r >(3cxx) std::subtract_with_carry_engine< _UIntType, __w, __s, __r >(3cxx)

NAME

std::subtract_with_carry_engine< _UIntType, __w, __s, __r > - The Marsaglia-Zaman generator.

SYNOPSIS

Public Types


typedef _UIntType result_type

Public Member Functions


template<typename _Sseq , typename = _If_seed_seq<_Sseq>> subtract_with_carry_engine (_Sseq &__q)
Constructs a subtract_with_carry_engine random number engine seeded from the seed sequence __q. subtract_with_carry_engine (result_type __sd)
Constructs an explicitly seeded subtract_with_carry_engine random number generator. void discard (unsigned long long __z)
Discard a sequence of random numbers. result_type operator() ()
Gets the next random number in the sequence. template<typename _Sseq > _If_seed_seq< _Sseq > seed (_Sseq &__q)
Seeds the initial state $x_0$ of the % subtract_with_carry_engine random number generator. template<typename _Sseq > auto seed (_Sseq &__q) -> _If_seed_seq< _Sseq >
void seed (result_type __sd=default_seed)
Seeds the initial state $x_0$ of the random number generator.

Static Public Member Functions


static constexpr result_type max ()
Gets the inclusive maximum value of the range of random integers returned by this generator. static constexpr result_type min ()
Gets the inclusive minimum value of the range of random integers returned by this generator.

Static Public Attributes


static constexpr result_type default_seed
static constexpr size_t long_lag
static constexpr size_t short_lag
static constexpr size_t word_size

Friends


template<typename _UIntType1 , size_t __w1, size_t __s1, size_t __r1, typename _CharT , typename _Traits > std::basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const std::subtract_with_carry_engine< _UIntType1, __w1, __s1, __r1 > &__x)
Inserts the current state of a % subtract_with_carry_engine random number generator engine __x into the output stream __os. bool operator== (const subtract_with_carry_engine &__lhs, const subtract_with_carry_engine &__rhs)
Compares two % subtract_with_carry_engine random number generator objects of the same type for equality. template<typename _UIntType1 , size_t __w1, size_t __s1, size_t __r1, typename _CharT , typename _Traits > std::basic_istream< _CharT, _Traits > & operator>> (std::basic_istream< _CharT, _Traits > &__is, std::subtract_with_carry_engine< _UIntType1, __w1, __s1, __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 _UIntType, size_t __w, size_t __s, size_t __r>

class std::subtract_with_carry_engine< _UIntType, __w, __s, __r >" The Marsaglia-Zaman generator.

This is a model of a Generalized Fibonacci discrete random number generator, sometimes referred to as the SWC generator.

A discrete random number generator that produces pseudorandom numbers using: x_{i}

The size of the state is $r$ and the maximum period of the generator is $(m^r - m^s - 1)$.

Definition at line 681 of file random.h.

Author

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Mon Jul 13 2020 libstdc++