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author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-06-10 13:10:11 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-06-10 13:10:11 +0000 |
commit | 780ab06a0ef626225aa2182a18b6e009a6bc45a8 (patch) | |
tree | 91fa79a123d945d7899d27ed878fa4ff89315b02 /bignum.c | |
parent | e214b1b6d374b5b68b757b16fbc13fa11fe17807 (diff) | |
download | ruby-780ab06a0ef626225aa2182a18b6e009a6bc45a8.tar.gz |
Update a comment.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41218 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'bignum.c')
-rw-r--r-- | bignum.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -628,7 +628,9 @@ absint_numwords_generic(size_t numbytes, int nlz_bits_in_msbyte, size_t word_num * * This function returns ((val_numbits * CHAR_BIT + word_numbits - 1) / word_numbits) * where val_numbits is the number of bits of abs(val). - * If it overflows, (size_t)-1 is returned. + * + * This function can overflow if _val_ is very big and word_numbits is less than CHAR_BIT. + * When overflow occur, (size_t)-1 is returned. * * If nlz_bits_ret is not NULL and overflow is not occur, * (return_value * word_numbits - val_numbits) is stored in *nlz_bits_ret. |