[ новости /+++ | форум | теги | ]

NAME
     dlarnv - return 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( * )



     #include <sunperf.h>

     void dlarnv(int idist, int *iseed, int n, double *x);

PURPOSE
     DLARNV returns a vector of n random real numbers from a uni-
     form 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 Box-Muller
     method is used to transform numbers from a uniform to a nor-
     mal distribution.

Партнёры:

Хостинг: