ran2_normal

        returns one or more normally-distributed random numbers with
        mean of zero an standard deviation of one.

        timing tools adopted from Random number generator and
        simulatiomn by Istvan Deak, Akademiai Kiado, Budapest 1990

        ran2_noraml(idum)
 INPUTS: idum : a long integer used to initialize the random number
        generator (ran2). The sequence for subsequent call will be
        save in the idum variable by the ran2 function. Set idum to
        any negative value to restart the sequence.

        dim  : the dimension of the result. (default = 1)

        none

        ran2_normal : one or more random deviates from a normal
        distribution  (dimension of the output = dim)

        none

        ran2_normalcom,ind,y

        none

        set IDUM to any negative value to initialize or
        reinitialize the sequence

        ran2

        ran2_normal(-23887878,dim=1000)

        Version 1.0, 2000/11/29, S. Benlloch (IAAT)

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