Count leading zeros
The clz instructions, short for count leading zeros, are used to count the amount of zeros at the start of the numbers binary representation.
Try it
Syntax
;; load a number onto the stack
i32.const 8388608 ;; 00000000_10000000_00000000_00000000
;; count leading zeros
i32.clz
;; the top item on the stack will now be 8
| Instruction | Binary opcode |
|---|---|
i32.clz |
0x67 |
i64.clz |
0x79 |