34 lines
1.0 KiB
C++
34 lines
1.0 KiB
C++
|
Random.h - Header file for random number class
|
||
|
|
|
||
|
|
#ifndef RANDOM_H_
|
||
|
|
#define RANDOM_H_
|
||
|
|
|
||
|
|
// Random class
|
||
|
|
// This code assumes 32-bit ints,
|
||
|
|
// which are standard on modern compilers.
|
||
|
|
//
|
||
|
|
// CONSTRUCTION: with (a) no initializer or (b) an integer
|
||
|
|
// that specifies the initial state of the generator
|
||
|
|
//
|
||
|
|
// ******************PUBLIC OPERATIONS*********************
|
||
|
|
// Return a random number according to some distribution:
|
||
|
|
// int randomInt( ) --> Uniform, 1 to 2^31-1
|
||
|
|
// int random0_1( ) --> Uniform, 0 to 1
|
||
|
|
// int randomInt( int low, int high ) --> Uniform low..high
|
||
|
|
|
||
|
|
class Random
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
explicit Random( int initialValue = 1 );
|
||
|
|
|
||
|
|
int randomInt( );
|
||
|
|
int randomIntWRONG( );
|
||
|
|
double random0_1( );
|
||
|
|
int randomInt( int low, int high );
|
||
|
|
|
||
|
|
private:
|
||
|
|
int state;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|