std::linear_congruential_engine<UIntType,a,c,m>:: operator()

From cppreference.com

result_type operator ( ) ( ) ;
(since C++11)

Advances the state of the engine, and generates a pseudo-random value from the new state.

Return value

A pseudo-random number in [ min ( ) , max ( ) ] .

Complexity

Amortized constant.

See also

advances the engine's state by a specified amount
(public member function)