operator<<,>>(std::mersenne_twister_engine)

 

C++

Language

Standard library headers

Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

 

Numerics library

Common mathematical functions

Special mathematical functions

Floating-point environment (C++11)

Complex numbers

Numeric arrays

Pseudo-random number generation

Compile-time rational arithmetic (C++11)

Numeric algorithms

gcd (C++17)

lcm (C++17)

Generic numeric operations

iota (C++11)

accumulate

inner_product

adjacent_difference

partial_sum

 

Pseudo-random number generation

Engines and engine adaptors

linear_congruential_engine (C++11)

mersenne_twister_engine (C++11)

subtract_with_carry_engine (C++11)

discard_block_engine (C++11)

independent_bits_engine (C++11)

shuffle_order_engine (C++11)

Generators

random_device (C++11)

Distributions

Uniform distributions

uniform_int_distribution (C++11)

uniform_real_distribution (C++11)

generate_canonical (C++11)

Bernoulli distributions

bernoulli_distribution (C++11)

binomial_distribution (C++11)

negative_binomial_distribution (C++11)

geometric_distribution (C++11)

Poisson distributions

poisson_distribution (C++11)

exponential_distribution (C++11)

gamma_distribution (C++11)

weibull_distribution (C++11)

extreme_value_distribution (C++11)

Normal distributions

normal_distribution (C++11)

lognormal_distribution (C++11)

chi_squared_distribution (C++11)

cauchy_distribution (C++11)

fisher_f_distribution (C++11)

student_t_distribution (C++11)

Sampling distributions

discrete_distribution (C++11)

piecewise_constant_distribution (C++11)

piecewise_linear_distribution (C++11)

Seed Sequences

seed_seq (C++11)

C library

rand

srand

RAND_MAX

 

std::mersenne_twister_engine

Member functions

mersenne_twister_engine::mersenne_twister_engine

mersenne_twister_engine::seed

Generation

mersenne_twister_engine::operator()

mersenne_twister_engine::discard

Characteristics

mersenne_twister_engine::min

mersenne_twister_engine::max

Non-member functions

operator==operator!=

operator<<operator>>

 

template< class CharT, class Traits,           class UIntType,           size_t w, size_t n, size_t m, size_t r,           UIntType a, size_t u, UIntType d, size_t s,           UIntType b, size_t t,           UIntType c, size_t l, UIntType f > std::basic_ostream<CharT,Traits>&     operator<<( std::basic_ostream<CharT,Traits>& ost,                 const std::mersenne_twister_engine<UIntType,w,n,m,r,a,u,d,s,b,t,c,l,f>& e );	(1)	(since C++11)
template< class CharT, class Traits,           class UIntType,           size_t w, size_t n, size_t m, size_t r,           UIntType a, size_t u, UIntType d, size_t s,           UIntType b, size_t t,           UIntType c, size_t l, UIntType f > std::basic_istream<CharT,Traits>&     operator>>( std::basic_istream<CharT,Traits>& ist,                 std::mersenne_twister_engine<UIntType,w,n,m,r,a,u,d,s,b,t,c,l,f>& e );	(2)	(since C++11)

1) Serializes the internal state of the pseudo-random number engine e as a sequence of decimal numbers separated by one or more spaces, and inserts it to the stream ost. The fill character and the formatting flags of the stream are ignored and unaffected.

2) Restores the internal state of the pseudo-random number engine e from the serialized representation, which was created by an earlier call to operator<< using a stream with the same imbued locale and the same CharT and Traits. If the input cannot be deserialized, e is left unchanged and failbit is raised on ist

If a textual representation is written using os << x and that representation is restored into the same or a different object y of the same type using is >> y, then x==y.

The textual representation is written with os.fmtflags set to ios_base::dec|ios_base::left and the fill character set to the space character. The textual representation of the engine's internal state is a set of decimal numbers separated by spaces.

Parameters

ost	-	output stream to insert the data to
ist	-	input stream to extract the data from
e	-	pseudo-random number engine

Return value

1) ost

2) ist

Exceptions

1) (none)

2) May throw std::ios::failure when setting failbit