i64.clz

Pops an

`i64`

value off the stack, counts the number of leading zero bits on the left, and then
pushes the result back on to the stack. This is the number of 0 bits at the higher end of the binary number (0b00000110 has 5
leading zeros, plus the other zero bits for the remaining 7 bytes that make up the 64 bit integer).
```
i64.clz
```

i64 | The value to workout the leading 0 bits for. |

i64 | The number of leading 0 bits the value has. |

;; Push the i64 value 0x07228CE20F12AB44 onto the stack i64.const 0x07228CE20F12AB44 ;; Pop the i64 value off the stack, count the number of leading zeros ;; and push the result back onto the stack i64.clz ;; The stack contains an i64 value of 5