i64.popcnt

Pops an

`i64`

value off the stack, counts the number of bits that have the value 1, and then
pushes the result back on to the stack. This is the number of 1 bits in the value (0b01100100 has a population count of 3).
```
i64.popcnt
```

i64 | The value to workout the population count for. |

i64 | The number of bits that are set to 1 in the value. |

;; Push the i64 value 0b01101011 (107) onto the stack i64.const 107 ;; Pop the i64 value off the stack, count the number of bits that are 1 ;; and push the result back onto the stack i64.popcnt ;; The stack contains an i64 value of 5