Re: [Gnuplot-info] gnuplot random numbers

[sfeam <eam...@gm...>]

On Wednesday, 27 February 2019 06:47:23 theozh wrote:
> with rand(0) you can generate pseudo-random numbers x in gnuplot.
> According to the manual they are in the interval [0:1]. 
> From this, I would conclude (0 <= x <= 1), i.e. 0 and 1 are included and possible values to appear, correct?

  rand(0) ∈ (0,1)

That is, the endpoints are not included in the range.
>From the source code in internal.c:

/***********************************************************************
     double ranf(double init)
                Random number generator as a Function
     Returns a random floating point number from a uniform distribution
     over 0 - 1 (endpoints of this interval are not returned) using a
     large integer generator.
     This is a transcription from Pascal to Fortran of routine
     Uniform_01 from the paper
     L'Ecuyer, P. and Cote, S. "Implementing a Random Number Package
     with Splitting Facilities." ACM Transactions on Mathematical
     Software, 17:98-111 (1991)


	Ethan