diff options
Diffstat (limited to 'lib/count-trailing-zeros.h')
| -rw-r--r-- | lib/count-trailing-zeros.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/count-trailing-zeros.h b/lib/count-trailing-zeros.h index be7131429c1..9f9f07f5a0d 100644 --- a/lib/count-trailing-zeros.h +++ b/lib/count-trailing-zeros.h @@ -68,7 +68,8 @@ _GL_INLINE_HEADER_BEGIN COUNT_TRAILING_ZEROS_INLINE int count_trailing_zeros_32 (unsigned int x) { - /* http://graphics.stanford.edu/~seander/bithacks.html */ + /* <https://github.com/gibsjose/BitHacks> + <http://www.fit.vutbr.cz/~ibarina/pub/bithacks.pdf> */ static const char de_Bruijn_lookup[32] = { 0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8, 31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9 |