# dlarnv.f man page

dlarnv.f —

## Synopsis

### Functions/Subroutines

subroutinedlarnv(IDIST, ISEED, N, X)DLARNVreturns 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.

## Referenced By

dlarnv(3) is an alias of dlarnv.f(3).