Showing content from https://cplusplus.com/reference/random/mt19937/ below:
class
<random>
std::mt19937
typedef mersenne_twister_engine<uint_fast32_t, 32,624,397,31,0x9908b0df,11,0xffffffff,7,0x9d2c5680,15,0xefc60000,18,1812433253> mt19937;
Mersenne Twister 19937 generator
A Mersenne Twister pseudo-random generator of 32-bit numbers with a state size of 19937 bits.
It is an instantiation of the mersenne_twister_engine with the following template parameters:
parameter name value UIntType result type uint_fast32_t w word size 32 n state size 624 m shift size 397 r mask bits 31 a XOR mask 0x9908b0df u tempering u 11 d tempering d 0xffffffff s tempering s 7 b tempering b 0x9d2c5680 t tempering t 15 c tempering c 0xefc60000 l tempering l 18 f initialization multiplier 1812433253
Member types The following alias is a member type of mt19937:
member type definition notes result_type uint_fast32_t The type of the numbers generated.
Member functions As a mersenne_twister_engine type, it has the following member functions:
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(constructor)
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Construct mersenne twister engine (public member function)
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min
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Minimum value (public static member function)
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max
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Maximum value (public static member function)
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seed
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Seed engine (public member function)
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operator()
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Generate random number (public member function)
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discard
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Advance internal state (public member function)
Non-member functions As a mersenne_twister_engine type, the following operator overloads may be applied to it:
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operator<<
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Insert into output stream (function template)
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operator>>
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Extract from input stream (function template)
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relational operators
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Relational operators (function template)
Member constexpr constants member constant definition notes word_size 32 The number of bits of each word in the state sequence. state_size 624 The number of elements in the state sequence (degree of recurrence). shift_size 397 The shift size used on twists to transform the values. mask_bits 31 The number of bits that mark the separation point of words on each twist. xor_mask 0x9908b0df The XOR mask applied as the linear function on each twist. tempering_u 11 The shift size of parameter u used in the tempering process of the generation algorithm. tempering_d 0xffffffff The XOR mask used as parameter d in the tempering process of the generation algorithm. tempering_s 7 The shift size of parameter s used in the tempering process of the generation algorithm. tempering_b 0x9d2c5680 The XOR mask used as parameter b in the tempering process of the generation algorithm. tempering_t 15 The shift size of parameter t used in the tempering process of the generation algorithm. tempering_c 0xefc60000 The XOR mask used as parameter c in the tempering process of the generation algorithm. tempering_l 18 The shift size of parameter l used in the tempering process of the generation algorithm. initialization_multiplier 1812433253 The initialization multiplier used to seed the state sequence when a single value is used as seed. default_seed 5489u The default seed used on construction or seeding.
See also
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mersenne_twister_engine
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Mersenne twister random number engine (class template)
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