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#!/usr/bin/env ruby
require 'gsl'
include GSL
include Math
f458 = Function.alloc { |x|
if x.zero?
val = 0.0
else
u = log(x)
v = 1.0 + u*u
val = 1.0/(v*v)
end
val
}
exp_result = -1.892751853489401670E-01
exp_abserr = 1.129133712015747658E-08
table = [0.0, 0.0, 1, 0]
result = f458.qaws([0.0, 1.0], table, [0.0, 1e-7])
p result
puts("exp_result: #{exp_result}")
puts("exp_abserr: #{exp_abserr}")
table = Integration::QAWS_Table.alloc(0.0, 0.0, 1, 0)
result = f458.qaws([0.0, 1.0], table, [0.0, 1e-7])
p result
p Integration.qaws(f458, [0.0, 1.0], table)
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