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Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux	CentOS 4.8	i386
	dlaruv(l)

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DLARUV

NAME
SYNOPSIS
PURPOSE
ARGUMENTS
FURTHER DETAILS

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NAME

DLARUV - return a vector of n random real numbers from a uniform (0,1)

SYNOPSIS

	SUBROUTINE DLARUV(		ISEED, N, X )
	INTEGER		N
	INTEGER		ISEED( 4 )
	DOUBLE		PRECISION X( N )

PURPOSE

DLARUV returns a vector of n random real numbers from a uniform (0,1) distribution (n <= 128).

This is an auxiliary routine called by DLARNV and ZLARNV.

ARGUMENTS

ISEED (input/output) INTEGER array, dimension (4)

On entry, the seed of the random number generator; the array elements must be between 0 and 4095, and ISEED(4) must be odd. On exit, the seed is updated.

N (input) INTEGER

The number of random numbers to be generated. N <= 128.

X (output) DOUBLE PRECISION array, dimension (N)

The generated random numbers.

FURTHER DETAILS

This routine uses a multiplicative congruential method with modulus 2**48 and multiplier 33952834046453 (see G.S.Fishman,
2**b: an exhaustive analysis for b = 32 and a partial analysis for b = 48’, Math. Comp. 189, pp 331-344, 1990).

48-bit integers are stored in 4 integer array elements with 12 bits per element. Hence the routine is portable across machines with integers of 32 bits or more.

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dlaruv(l)