DragonFly On-Line Manual Pages

Search: Section:  

dlarnv.f(3)                         LAPACK                         dlarnv.f(3)


NAME

       dlarnv.f -


SYNOPSIS

   Functions/Subroutines
       subroutine dlarnv (IDIST, ISEED, N, X)
           DLARNV returns a vector of random numbers from a uniform or normal
           distribution.

Function/Subroutine Documentation
   subroutine dlarnv (integerIDIST, integer, dimension( 4 )ISEED, integerN,
       double precision, dimension( * )X)
       DLARNV returns a vector of random numbers from a uniform or normal
       distribution.

       Purpose:

            DLARNV returns a vector of n random real numbers from a uniform or
            normal distribution.

       Parameters:
           IDIST

                     IDIST is INTEGER
                     Specifies the distribution of the random numbers:
                     = 1:  uniform (0,1)
                     = 2:  uniform (-1,1)
                     = 3:  normal (0,1)

           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.

           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:
           September 2012

       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 normal distribution.

       Definition at line 98 of file dlarnv.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2                   Sat Nov 16 2013                    dlarnv.f(3)

Search: Section: