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NAME
     zlarnv - return a vector of n random complex numbers from  a
     uniform or normal distribution

SYNOPSIS
     SUBROUTINE ZLARNV( IDIST, ISEED, N, X )

     INTEGER IDIST, N

     INTEGER ISEED( 4 )

     COMPLEX*16 X( * )



     #include <sunperf.h>

     void zlarnv(int idist, int *iseed, int n, doublecomplex *x);

PURPOSE
     ZLARNV returns a vector of n random complex numbers  from  a
     uniform or normal distribution.


ARGUMENTS
     IDIST     (input) INTEGER
               Specifies the distribution of the random numbers:
               = 1:  real and imaginary parts each uniform (0,1)
               = 2:  real and imaginary parts each uniform (-1,1)
               = 3:  real and imaginary parts each normal (0,1)
               = 4:  uniformly distributed on the disc abs(z) < 1
               = 5:  uniformly distributed on the circle abs(z) =
               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) COMPLEX*16 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.

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