NAME

       dlaran.f -

SYNOPSIS

   Functions/Subroutines
       double precision function dlaran (ISEED)
           DLARAN

Function/Subroutine Documentation

   double precision function dlaran (integer, dimension( 4 ) ISEED)
       DLARAN

       Purpose:

            DLARAN returns a random real number from a uniform (0,1)
            distribution.

       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.

       Author:
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Date:
           November 2011

       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.

Author

       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.6.0                                    Sun Jan 17 2016                                     dlaran.f(3)