LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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zlarnd.f File Reference

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Functions/Subroutines

complex *16 function zlarnd (IDIST, ISEED)
 ZLARND More...
 

Function/Subroutine Documentation

complex*16 function zlarnd ( integer  IDIST,
integer, dimension( 4 )  ISEED 
)

ZLARND

Purpose:
 ZLARND returns a random complex number from a uniform or normal
 distribution.
Parameters
[in]IDIST
          IDIST is 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
[in,out]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.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date
November 2011
Further Details:
  This routine calls the auxiliary routine DLARAN to generate a random
  real number from a uniform (0,1) distribution. The Box-Muller method
  is used to transform numbers from a uniform to a normal distribution.

Definition at line 76 of file zlarnd.f.

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