dlarnv (l)  Linux Man Pages
dlarnv: returns a vector of n random real numbers from a uniform or normal distribution
Command to display dlarnv
manual in Linux: $ man l dlarnv
NAME
DLARNV  returns a vector of n random real numbers from a uniform or normal distribution
SYNOPSIS
 SUBROUTINE DLARNV(

IDIST, ISEED, N, X )

INTEGER
IDIST, N

INTEGER
ISEED( 4 )

DOUBLE
PRECISION X( * )
PURPOSE
DLARNV returns a vector of n random real numbers from a uniform or
normal distribution.
ARGUMENTS
 IDIST (input) INTEGER

Specifies the distribution of the random numbers:
= 1: uniform (0,1)
= 2: uniform (1,1)
= 3: normal (0,1)
 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.
 X (output) DOUBLE PRECISION array, dimension (N)

The generated random numbers.
FURTHER DETAILS
This routine calls the auxiliary routine DLARUV to generate random
real numbers from a uniform (0,1) distribution, in batches of up to
128 using vectorisable code. The BoxMuller method is used to
transform numbers from a uniform to a normal distribution.
Pages related to dlarnv
 dlarnv (3)
 dlar1v (l)  computes the (scaled) rth column of the inverse of the sumbmatrix in rows B1 through BN of the tridiagonal matrix L D L^T  sigma I
 dlar2v (l)  applies a vector of real plane rotations from both sides to a sequence of 2by2 real symmetric matrices, defined by the elements of the vectors x, y and z
 dlarf (l)  applies a real elementary reflector H to a real m by n matrix C, from either the left or the right
 dlarfb (l)  applies a real block reflector H or its transpose Haq to a real m by n matrix C, from either the left or the right
 dlarfg (l)  generates a real elementary reflector H of order n, such that H * ( alpha ) = ( beta ), Haq * H = I
 dlarfp (l)  generates a real elementary reflector H of order n, such that H * ( alpha ) = ( beta ), Haq * H = I
 dlarft (l)  forms the triangular factor T of a real block reflector H of order n, which is defined as a product of k elementary reflectors
 dlarfx (l)  applies a real elementary reflector H to a real m by n matrix C, from either the left or the right
 dlargv (l)  generates a vector of real plane rotations, determined by elements of the real vectors x and y