Pseudo-random number generation
Uniform random bit generators
Engines and engine adaptors
Non-deterministic generator
Uniform distributions
Bernoulli distributions
Poisson distributions
Normal distributions
Sampling distributions
Seed Sequences
C library
friend bool operator==( const linear_congruential_engine& lhs,
                        const linear_congruential_engine& rhs );
(1) (since C++11)
friend bool operator!=( const linear_congruential_engine& lhs,
                        const linear_congruential_engine& rhs );
(2) (since C++11)
(until C++20)

Compares two pseudo-random number engines. Two engines are equal, if their internal states are equivalent, that is, if they would generate equivalent values for any number of calls of operator().

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::linear_congruential_engine<UIntType,a,c,m> is an associated class of the arguments.

The != operator is synthesized from operator==.

(since C++20)


[edit] Parameters

lhs, rhs - engines to compare

[edit] Return value

1) true if the engines are equivalent, false otherwise.
2) true if the engines are not equivalent, false otherwise.

[edit] Exceptions

Throws nothing.

[edit] 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 3519 C++11 the form of equality operators were unspecified specified to be hidden friends