# laruv - Man Page

laruv: random uniform vector

## Synopsis

### Functions

subroutine dlaruv (iseed, n, x)
DLARUV returns a vector of n random real numbers from a uniform distribution.
subroutine slaruv (iseed, n, x)
SLARUV returns a vector of n random real numbers from a uniform distribution.

## Function Documentation

### subroutine dlaruv (integer, dimension( 4 ) iseed, integer n, double precision, dimension( n ) x)

DLARUV returns a vector of n random real numbers from a uniform distribution.

Purpose:

``` DLARUV returns a vector of n random real numbers from a uniform (0,1)
distribution (n <= 128).

This is an auxiliary routine called by DLARNV and ZLARNV.```
Parameters

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. N <= 128.```

X

```          X is DOUBLE PRECISION array, dimension (N)
The generated random numbers.```
Author

Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Further Details:

```  This routine uses a multiplicative congruential method with modulus
2**48 and multiplier 33952834046453 (see G.S.Fishman,
'Multiplicative congruential random number generators with modulus
2**b: an exhaustive analysis for b = 32 and a partial analysis for
b = 48', Math. Comp. 189, pp 331-344, 1990).

48-bit integers are stored in 4 integer array elements with 12 bits
per element. Hence the routine is portable across machines with
integers of 32 bits or more.```

Definition at line 94 of file dlaruv.f.

### subroutine slaruv (integer, dimension( 4 ) iseed, integer n, real, dimension( n ) x)

SLARUV returns a vector of n random real numbers from a uniform distribution.

Purpose:

``` SLARUV returns a vector of n random real numbers from a uniform (0,1)
distribution (n <= 128).

This is an auxiliary routine called by SLARNV and CLARNV.```
Parameters

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. N <= 128.```

X

```          X is REAL array, dimension (N)
The generated random numbers.```
Author

Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Further Details:

```  This routine uses a multiplicative congruential method with modulus
2**48 and multiplier 33952834046453 (see G.S.Fishman,
'Multiplicative congruential random number generators with modulus
2**b: an exhaustive analysis for b = 32 and a partial analysis for
b = 48', Math. Comp. 189, pp 331-344, 1990).

48-bit integers are stored in 4 integer array elements with 12 bits
per element. Hence the routine is portable across machines with
integers of 32 bits or more.```

Definition at line 94 of file slaruv.f.

## Author

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## Info

Tue Nov 28 2023 12:08:43 Version 3.12.0 LAPACK