dlaruv.f

Section: LAPACK (3)
Updated: Tue Nov 14 2017
Page Index
 

NAME

dlaruv.f  

SYNOPSIS


 

Functions/Subroutines


subroutine dlaruv (ISEED, N, X)
DLARUV returns a vector of n random real numbers from a uniform distribution.  

Function/Subroutine Documentation

 

subroutine dlaruv (integer, dimension( 4 ) ISEED, integer N, double precision, dimension( n ) X)

DLARUV returns a vector of n random real numbers from a uniform distribution.

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.


 

Parameters:

ISEED

          ISEED is 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

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


X

          X is DOUBLE PRECISION array, dimension (N)
          The generated random numbers.


 

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

December 2016

Further Details:

  This routine uses a multiplicative congruential method with modulus
  2**48 and multiplier 33952834046453 (see G.S.Fishman,
  'Multiplicative congruential random number generators with modulus
  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.


 

Definition at line 97 of file dlaruv.f.  

Author

Generated automatically by Doxygen for LAPACK from the source code.


 

Index

NAME
SYNOPSIS
Functions/Subroutines
Function/Subroutine Documentation
subroutine dlaruv (integer, dimension( 4 ) ISEED, integer N, double precision, dimension( n ) X)
Author
LinuxReviews : manual page archive : man3