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std::discard_block_engine<Engine,P,R>:: discard_block_engine

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C++
Numerics library
Pseudo-random number generation
Random number distributions
Uniform distributions
(C++11)
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Bernoulli distributions
(C++11)
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Poisson distributions
(C++11)
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Normal distributions
(C++11)
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Sampling distributions
(C++11)
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std::discard_block_engine
discard_block_engine ( ) ;
(1) (since C++11)
explicit discard_block_engine ( result_type s ) ;
(2) (since C++11)
template < class SeedSeq >
explicit discard_block_engine ( SeedSeq & seq ) ;
(3) (since C++11)
explicit discard_block_engine ( const Engine & e ) ;
(4) (since C++11)
explicit discard_block_engine ( Engine && e ) ;
(5) (since C++11)

Constructs new pseudo-random engine adaptor.

1) Default constructor. The underlying engine is also default-constructed.
2) Constructs the underlying engine with s .
3) Constructs the underlying engine with seed sequence seq .
This overload participates in overload resolution only if Sseq satisfies the requirements of SeedSequence .
4) Constructs the underlying engine with a copy of e .
5) Move-constructs the underlying engine with e . e holds unspecified, but valid state afterwards.

Contents

Parameters

s - integer value to construct the underlying engine with
seq - seed sequence to construct the underlying engine with
e - pseudo-random number engine to initialize with

Exceptions

3) If SeedSeq is not std::seed_seq , throws the exceptions thrown by the seq.generate call.

Example

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 2181 C++11 overload ( 3 ) would not throw even if the seq.generate call throws propagates the exception