std::linear_congruential_engine
From cppreference.com
Defined in header <random>


template< class UIntType, 
(since C++11)  
linear_congruential_engine
is a random number engine based on Linear congruential generator (LCG). A LCG has a state that consists of a single integer.
The transition algorithm of the LCG function is x
i+1 ← (ax
i+c) mod m.
The following typedefs define the random number engine with two commonly used parameter sets:
Defined in header
<random>  
Type  Definition 
minstd_rand0

std::linear_congruential_engine<std::uint_fast32_t, 16807, 0, 2147483647> Discovered in 1969 by Lewis, Goodman and Miller, adopted as "Minimal standard" in 1988 by Park and Miller 
minstd_rand

std::linear_congruential_engine<std::uint_fast32_t, 48271, 0, 2147483647> Newer "Minimum standard", recommended by Park, Miller, and Stockmeyer in 1993 
Contents 
[edit] Member types
Member type  Definition 
result_type

The integral type generated by the engine. Results are undefined if this is not an unsigned integral type. 
[edit] Member functions
Construction and Seeding  
constructs the engine (public member function)  
sets the current state of the engine (public member function)  
Generation  
advances the engine's state and returns the generated value (public member function)  
advances the engine's state by a specified amount (public member function)  
Characteristics  
[static] 
gets the smallest possible value in the output range (public static member function) 
[static] 
gets the largest possible value in the output range (public static member function) 
[edit] Nonmember functions
compares the internal states of two pseudorandom number engines (function template)  
performs stream input and output on pseudorandom number engine (function template) 
[edit] Member objects
constexpr UIntType multiplier [static] 
the multiplier term (a). (public static member constant) 
constexpr UIntType increment [static] 
the increment term (c). (public static member constant) 
constexpr UIntType modulus [static] 
the modulus term (m). (public static member constant) 
constexpr UIntType default_seed [static] 
the default seed (1). (public static member constant) 