diff options
Diffstat (limited to 'spec/ruby/core/bignum/size_spec.rb')
| -rw-r--r-- | spec/ruby/core/bignum/size_spec.rb | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/spec/ruby/core/bignum/size_spec.rb b/spec/ruby/core/bignum/size_spec.rb new file mode 100644 index 0000000000..8629cba972 --- /dev/null +++ b/spec/ruby/core/bignum/size_spec.rb @@ -0,0 +1,16 @@ +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 |