Defined in header <random> | ||
|---|---|---|
template<
class UIntType,
size_t w, size_t n, size_t m, size_t r,
UIntType a, size_t u, UIntType d, size_t s,
UIntType b, size_t t,
UIntType c, size_t l, UIntType f
> class mersenne_twister_engine;
| (since C++11) |
mersenne_twister_engine is a random number engine based on Mersenne Twister algorithm. It produces high quality unsigned integer random numbers of type UIntType on the interval [0, 2w
-1].
The following type aliases define the random number engine with two commonly used parameter sets:
Defined in header <random> |
|
|---|---|
| Type | Definition |
mt19937 |
|
mt19937_64 |
|
| Member type | Definition |
|---|---|
result_type | The integral type generated by the engine. Results are undefined if this is not an unsigned integral type. |
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) |
| compares the internal states of two pseudo-random number engines (function template) |
|
| performs stream input and output on pseudo-random number engine (function template) |
| constexpr size_t word_size
[static] | the template parameter w, determines the range of values generated by the engine. (public static member constant) |
| constexpr size_t state_size
[static] | the template parameter n. The engine state is n values of UIntType (public static member constant) |
| constexpr size_t shift_size
[static] | the template parameter m (public static member constant) |
| constexpr size_t mask_bits
[static] | the template parameter r, also known as the twist value. (public static member constant) |
| constexpr UIntType xor_mask
[static] | the template parameter a, the conditional xor-mask. (public static member constant) |
| constexpr size_t tempering_u
[static] | the template parameter u, first component of the bit-scrambling (tempering) matrix (public static member constant) |
| constexpr UIntType tempering_d
[static] | the template parameter d, second component of the bit-scrambling (tempering) matrix (public static member constant) |
| constexpr size_t tempering_s
[static] | the template parameter s, third component of the bit-scrambling (tempering) matrix (public static member constant) |
| constexpr UIntType tempering_b
[static] | the template parameter b, fourth component of the bit-scrambling (tempering) matrix (public static member constant) |
| constexpr size_t tempering_t
[static] | the template parameter t, fifth component of the bit-scrambling (tempering) matrix (public static member constant) |
| constexpr UIntType tempering_c
[static] | the template parameter c, sixth component of the bit-scrambling (tempering) matrix (public static member constant) |
| constexpr size_t tempering_l
[static] | the template parameter l, seventh component of the bit-scrambling (tempering) matrix (public static member constant) |
| constexpr UIntType initialization_multiplier
[static] | the template parameter f (public static member constant) |
| constexpr UIntType default_seed
[static] | the constant value 5489u (public static member constant) |
The 10000th consecutive invocation of a default-contructed std::mt19937 is required to produce the value 4123659995.
The 10000th consecutive invocation of a default-contructed std::mt19937_64 is required to produce the value 9981545732273789042.
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/numeric/random/mersenne_twister_engine