subtract_with_carry::subtract_with_carry

建置引擎。

subtract_with_carry();
explicit subtract_with_carry(unsigned long x0 = default_seed);
template<class Gen>
   subtract_with_carry(Gen& gen);
subtract_with_carry(const subtract_with_carry& right);
subtract_with_carry(subtract_with_carry& right);

參數

• x0
  初始值。

• Gen
  種子產生器型別。

• gen
  種子產生器。

• right
  subtract_with_carry 物件。

備註

第一個建構函式來建構 subtract_with_carry 物件並呼叫 seed()加以初始化。

第二個建構函式來建構 subtract_with_carry 物件並呼叫 seed(x0)加以初始化。

第三個建構函式來建構 subtract_with_carry 物件並呼叫 seed(gen)加以初始化。

第四和第五個建構函式會將 subtract_with_carry 物件建構類別 subtract_with_carry 物件。

範例

 

// std_tr1__random__subtract_with_carry_construct.cpp 
// compile with: /EHsc 
#include <random> 
#include <iostream> 
 
typedef std::mt19937 Myeng; 
typedef std::subtract_with_carry<unsigned int, 1 << 24, 
    10, 24> Myceng; 
int main() 
    { 
    Myeng eng; 
    Myceng ceng; 
    Myceng::result_type compval = ceng(); 
 
    compval = compval;  // to quiet "unused" warnings 
 
    std::cout << "M == " << Myceng::modulus << std::endl; 
    std::cout << "S == " << Myceng::short_lag << std::endl; 
    std::cout << "R == " << Myceng::long_lag << std::endl; 
 
    std::cout << "min == " << ceng.min() << std::endl; 
    std::cout << "max == " << ceng.max() << std::endl; 
 
    ceng.seed(); // reseed base engine 
    std::cout << "a random value == " << ceng() << std::endl; 
    std::cout << "a random value == " << ceng() << std::endl; 
    std::cout << "a random value == " << ceng() << std::endl; 
 
    Myceng ceng2(eng); // construct with generator 
    ceng2.seed(eng);  // seed with generator 
 
    Myceng ceng3(5UL);  // construct with unsigned long seed 
    ceng3.seed(5UL);  // seed with unsigned long 
 
    return (0); 
    } 
 

需求

標題: <random>

命名空間: std

請參閱

參考

<random>

subtract_with_carry Class