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


 normal distribution.

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.

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

September 2012

  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.