C++

Reference

<random>

class
<random>

std::ranlux48_base

typedef subtract_with_carry_engine <uint_fast64_t, 48, 5, 12> ranlux48_base;
Ranlux 48 base generator
A subtract-with-carry pseudo-random generator of 48-bit numbers, generally used as the base engine for the ranlux48 generator.

It is an instantiation of the subtract_with_carry_engine with the following template parameters:
parameternamevalue
UIntTyperesult typeuint_fast64_t
wword size48
sshort lag5
rlong lag12

Member types

The following alias is a member type of ranlux48_base:

member typedefinitionnotes
result_typeuint_fast64_tThe type of the numbers generated.

Member functions

As a subtract_with_carry_engine type, it has the following member functions:
(constructor)
Construct subtract-with-carry engine (public member function)
min
Minimum value (public static member function)
max
Maximum value (public static member function)
seed
Seed engine (public member function)
operator()
Generate random number (public member function)
discard
Advance internal state (public member function)

Non-member functions

As a subtract_with_carry_engine type, the following operator overloads may be applied to it:
operator<<
Insert into output stream (function template)
operator>>
Extract from input stream (function template)
relational operators
Relational operators (function template)

Member constexpr constants

member constantdefinitionnotes
word_size48The number of bits of each word in the state sequence.
short_lag5The short lag value.
long_lag12The long lag value.
default_seed19780503uThe default seed used on construction or seeding.

See also

subtract_with_carry_engine
Subtract-with-carry random number engine (class template)