[DOC]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44913 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
deivid-rodriguez · Feb 11, 2014 · 2fee22f · 2fee22f
1 parent 09e6766
commit 2fee22f
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diff --git a/bignum.c b/bignum.c
@@ -6999,6 +6999,13 @@ rb_big_size(VALUE big)
  *     (2**10000).bit_length     #=> 10001
  *     (2**10000+1).bit_length   #=> 10001
  *
+ *  This method can be used to detect overflow in Array#pack as follows.
+ *
+ *     if n.bit_length < 32
+ *       [n].pack("l") # no overflow
+ *     else
+ *       raise "overflow"
+ *     end
  */
 
 static VALUE

diff --git a/numeric.c b/numeric.c
@@ -3538,6 +3538,14 @@ fix_size(VALUE fix)
  *     (2**12-1).bit_length      #=> 12
  *     (2**12).bit_length        #=> 13
  *     (2**12+1).bit_length      #=> 13
+ *
+ *  This method can be used to detect overflow in Array#pack as follows.
+ *
+ *     if n.bit_length < 32
+ *       [n].pack("l") # no overflow
+ *     else
+ *       raise "overflow"
+ *     end
  */
 
 static VALUE