Random--Random Number Generator

SYNOPSIS

#include <nihcl/Random.h>

BASE CLASS

Object

DERIVED CLASSES

None

DESCRIPTION

Class Random provides a pseudo-random number generator. The member function next() returns random float numbers uniformly distributed over the interval (0.0,1.0).

Reference:

Pierre L'ecuyer, "Efficient and Portable Combined Random Number Generators", Commun. ACM 31, 6 (June 1988), 742-749.

CONSTRUCTORS

Random(): Creates an instance of class Random with seed1 = seconds elapsed since 00:00:00 GMT, Jan. 1, 1970, and seed2 = the address of this instance.
Random(long seed1, long seed2): Creates an instance of class Random with seed1 and seed2 set from the arguments.

ACCESSING RANDOM NUMBER GENERATORS

float next(): The function next() returns random float numbers uniformly distributed over the interval (0.0,1.0).

SEARCHING

virtual unsigned hash() const: Returns the address of this Random.

TESTING RANDOM NUMBER GENERATORS

virtual bool isEqual(const Object& ob) const: Returns YES if this Random and ob are the same; i.e., reside at the same memory address.

COPYING RANDOM NUMBER GENERATORS

virtual void deepenShallowCopy(): This function is a no-op for class Random.

READING, PRINTING RANDOM NUMBER GENERATORS

virtual void printOn(ostream& strm =cout) const: Prints seed1 and seed2 of this instance of class Random on the output stream strm.

PROTECTED MEMBERS

Object I/O

virtual void storer(OIOofd& fd) const
virtual void storer(OIOout& strm) const: Stores this instance of class Random on fd or strm.

DISABLED MEMBER FUNCTIONS

virtual int compare(const Object& ob) const: These functions are implemented as shouldNotImplement().

EXCEPTIONS RAISED

None

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