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require File.expand_path('../../../spec_helper', __FILE__)
describe "Bignum#size" do
it "returns the number of bytes required to hold the unsigned bignum data" do
# that is, n such that 256 * n <= val.abs < 256 * (n+1)
(256**7).size.should == 8
(256**8).size.should == 9
(256**9).size.should == 10
(256**10).size.should == 11
(256**10-1).size.should == 10
(256**11).size.should == 12
(256**12).size.should == 13
(256**20-1).size.should == 20
(256**40-1).size.should == 40
end
end
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