darbio/integer.rb

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Last active August 29, 2015 14:08

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Revisions

pithyless created this gist Mar 24, 2014.

integer.rb

-Original file line number
+Diff line change
@@ -0,0 +1,10 @@
+    class Integer
+      N_BYTES = [42].pack('i').size
+      N_BITS = N_BYTES * 16
+      MAX = 2 ** (N_BITS - 2) - 1
+      MIN = -MAX - 1
+    end
+    p Integer::MAX              #=> 4611686018427387903
+    p Integer::MAX.class        #=> Fixnum
+    p (Integer::MAX + 1).class  #=> Bignum