GSL_Function.new
GSL_Function.alloc
This creates a GSL_Function object with a procedure block. For example, an object corresponding to the function sin(x) is given by
require 'gsl' f = GSL_Function.new { |x| sin(x) }
One can compute sin(x) with the object f and the method eval, as
p f.eval(x)
GSL_Function#eval(x)
GSL_Function#call(x)
GSL_Function#[x]
These methods return a value of the function at x.
p f.eval(2.5) p f.call(2.5) p f[2.5]
GSL_Function#set { |x| ... }
This method sets the procedure of the GSL_Function object, as
f = GSL_Function.new { |x| sin(x) } p f.eval(1.0) <- sin(1.0) f.set { |x| cos(x) } p f.eval(1.0) <- cos(1.0)