diff options
Diffstat (limited to 'lib/count-leading-zeros.h')
| -rw-r--r-- | lib/count-leading-zeros.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/count-leading-zeros.h b/lib/count-leading-zeros.h index 1b60e28e7f..c8b3dc0511 100644 --- a/lib/count-leading-zeros.h +++ b/lib/count-leading-zeros.h @@ -70,7 +70,8 @@ _GL_INLINE_HEADER_BEGIN COUNT_LEADING_ZEROS_INLINE int count_leading_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] = { 31, 22, 30, 21, 18, 10, 29, 2, 20, 17, 15, 13, 9, 6, 28, 1, 23, 19, 11, 3, 16, 14, 7, 24, 12, 4, 8, 25, 5, 26, 27, 0 |