col::FibRand Class Reference

Lagged Fibonacci random sequence. More...

Collaboration diagram for col::FibRand:

[legend]List of all members.

Random numbers
	FibRand (int seed)
unsigned int	rand (void)
	Returns a pseudo random integer in the range [0,FibRand::M_MaxRand).
unsigned int	mrand (unsigned int m)
	Returns a pseudo random integer in the range [0,m).
float	frand (void)
	Returns a pseudo random float in the range [0,1).
Static Public Attributes
static const int	M_MaxRand = (1 << 30)
	Maximum random number plus 1 that can be returned by FibRand.

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Detailed Description

Lagged Fibonacci random sequence.

The constructor creates an object, from which you can retrieve random numbers by any of the functions FibRand::rand(), FibRand::mrand(), and FibRand::frand(). fills a field of 100 random numbers, which can be retrieved

Bug:

The range has not really been checked/verified.

Implementation:

Nach Knuth TAOCP Vol.2 pp.186f. Internally, a FibRand object stores 100 random numbers, which are then doled out by one of the "getters". After that, a new set of 100 numbers is generated. Hoefully, this yields better performance than producing each random number on demand.

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Member Function Documentation

unsigned int col::FibRand::rand

(

void

)

Returns a pseudo random integer in the range [0,FibRand::M_MaxRand).

See also:

FibRand

unsigned int col::FibRand::mrand

(

unsigned int

m

)

Returns a pseudo random integer in the range [0,m).

See also:

FibRand

float col::FibRand::frand

(

void

)

Returns a pseudo random float in the range [0,1).

See also:

FibRand

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The documentation for this class was generated from the following files:

• ColUtils.h
• ColUtils.cpp

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