std::mersenne_twister_engine
STD：Mersenne[医]捻线机[医]发动机
| Defined in header | | |
|---|---|---|
| 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是一个基于梅森扭子算法。它产生高质量的无符号整数型随机数。UIntType关于区间。[0，2w
-1]。
以下类型别名定义了具有两个常用参数集的随机数引擎：
在标头中定义<random>
*。
类型定义
mt 19937 STD：：Mersenne[医]捻线机[医]引擎<std：：uint[医]扣件32[医]t，32，624，397，31，0x9908b0df，11，0xffffff，7，0x9d2c5680，15，0xefc60000，18，1812433253>32位Mersenne Twister，松本和西村，1998。
19937[医]64性病：：Mersenne[医]捻线机[医]引擎<std：：uint[医]快64[医]t，64，312，156，31，0xb5026f5a96619e9，29，0x555555555555555555，17，0x71d67fffeda60000，37，0xfff7eee0000000，43，6364136223846793005>64位Mersenne Twister，松本和西村，2000。
成员类型
| Member type | Definition |
|---|---|
| result_type | The integral type generated by the engine. Results are undefined if this is not an unsigned integral type. |
成员函数
建设与播种
*。
%28构造函数%29构造引擎%28公共成员函数%29
种子设置引擎%28公共成员函数%29的当前状态。
世代
运算符%28%29提升引擎%27s状态并返回生成值%28公共成员函数%29
丢弃将引擎%27s状态提升指定数量%28公共成员函数%29
特征
敏静态获取输出范围%28公共静态成员函数%29中的最小可能值。
马克斯静态获取输出范围%28公共静态成员函数%29中的最大可能值。
非会员职能
| operator==operator!= | compares the internal states of two pseudo-random number engines (function template) |
|---|---|
| operator<<operator>> | performs stream input and output on pseudo-random number engine (function template) |
成员对象
| 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) |
注记
默认构造的第一万个连续调用。std::mt19937是产生价值的必要条件。4123659995...
默认构造的第一万个连续调用。std::mt19937_64是产生价值的必要条件。9981545732273789042...
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