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zlarnv.f(3) LAPACK zlarnv.f(3)

NAME

zlarnv.f

SYNOPSIS

Functions/Subroutines


subroutine zlarnv (IDIST, ISEED, N, X)
ZLARNV returns a vector of random numbers from a uniform or normal distribution.

Function/Subroutine Documentation

subroutine zlarnv (integer IDIST, integer, dimension( 4 ) ISEED, integer N, complex*16, dimension( * ) X)

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

Purpose:


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

Parameters:

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

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 COMPLEX*16 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 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 101 of file zlarnv.f.

Author

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Tue Nov 14 2017 Version 3.8.0