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

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Functions/Subroutines

DOUBLE PRECISION function dlarnd (IDIST, ISEED)
 DLARND

Function/Subroutine Documentation

DOUBLE PRECISION function dlarnd ( integer  IDIST,
integer, dimension( 4 )  ISEED 
)

DLARND

Purpose:
 DLARND returns a random real number from a uniform or normal
 distribution.
Parameters
[in]IDIST
          IDIST is INTEGER
          Specifies the distribution of the random numbers:
          = 1:  uniform (0,1)
          = 2:  uniform (-1,1)
          = 3:  normal (0,1)
[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 74 of file dlarnd.f.

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