diff options
Diffstat (limited to 'hash.c')
| -rw-r--r-- | hash.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -191,11 +191,11 @@ rb_num_hash_start(st_index_t n) * - (n >> (RUBY_SPECIAL_SHIFT+3)) was added to make symbols hash well, * n.b.: +3 to remove most ID scope, +1 worked well initially, too * n.b.: +1 (instead of 3) worked well initially, too - * - (n << 3) was finally added to avoid losing bits for fixnums + * - (n << 16) was finally added to avoid losing bits for fixnums * - avoid expensive modulo instructions, it is currently only * shifts and bitmask operations. */ - return (n >> (RUBY_SPECIAL_SHIFT + 3) | (n << 3)) ^ (n >> 3); + return (n >> (RUBY_SPECIAL_SHIFT + 3) ^ (n << 16)) ^ (n >> 3); } long |