# Function bitNot Bitwise NOT value, `~x`. For matrices, the function is evaluated element wise. For units, the function is evaluated on the best prefix base. ## Syntax ```js math.bitNot(x) ``` ### Parameters Parameter | Type | Description --------- | ---- | ----------- `x` | number | BigNumber | Array | Matrix | Value to not ### Returns Type | Description ---- | ----------- number | BigNumber | Array | Matrix | NOT of `x` ### Throws Type | Description ---- | ----------- ## Examples ```js math.bitNot(1) // returns number -2 math.bitNot([2, -3, 4]) // returns Array [-3, 2, 5] ``` ## See also [bitAnd](bitAnd.md), [bitOr](bitOr.md), [bitXor](bitXor.md), [leftShift](leftShift.md), [rightArithShift](rightArithShift.md), [rightLogShift](rightLogShift.md)