GSL_Rng.new([rng_type, seed])
This method returns a GSL_Rng object of a random number generator of type rng_type with a seed seed. These two arguments can be omitted, and the generator 'gsl_rng_mt19937' and a seed 0 are used as defaults. GSL provides a number of types of random number generator, one can choose one with a constant integer GSL_RNG_xxx, as
See GSL manual for the complete list. This demonstrates how to use this class,
r = GSL_Rng.new(GSL_RNG_TAUS, 1) r2 = GSL_Rng.new(GSL_RNG_RAN0, 2) p r.get <- get an integer p r2.uniform <- get a float of [0, 1)
A generator of the type gsl_rng_taus is created with a seed 1. The method get returns a random integer. The methods uniform returns a floating number uniformly distributed in the range [0, 1).
GSL_Rng#set(s)
This method initializes the random number generator with a given seed s.
GSL_Rng#get
This returns a random integer from the reciever generator.
GSL_Rng#uniform
This method returns a double precision floating point number uniformly distributed in the range [0,1).
GSL_Rng#uniform_pos
This returns a positive double precision floating point number uniformly distributed in the range (0,1), excluding both 0.0 and 1.0.
GSL_Rng#uniform_int(n)
This method returns a random integer from 0 to n-1 inclusive.
GSL_Rng#name
This method returns a Sting object of the name of the generator.
GSL_Rng#max
GSL_Rng#min
These method return the largest/smallest value that the method get can return.