LAPACK  3.7.0
LAPACK: Linear Algebra PACKage
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real function slarnd ( integer  IDIST,
integer, dimension( 4 )  ISEED 
)

SLARND

Purpose:
 SLARND 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
December 2016
Further Details:
  This routine calls the auxiliary routine SLARAN 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.