Library: Math, Random number utilities (OMRANDOM) Import: omrandom.xmd

Return type: Integer Returns:  Random numbers based on the exponential distribution.

Declaration

  define external integer function random.exponential
    average value integer lambda

Use this function to generate random numbers based on the exponential distribution. Over a large number of trials, the average over all of the generated random numbers will tend towards the argument lambda.

Example:

This program generates 1000 random numbers with an exponential distribution and an average value of 20.

  import "omrandom.xmd" prefixed by random.

  process
       repeat for integer i from 1 to 1000
          output "d" % i || ": "
              || "d" % random.exponential average 20
              || "%n"
       again

Other Library Functions    random.exponential    random.omrandom-version    random.set-seed    random.uniform

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