# Function bitAnd Bitwise AND two values, `x & y`. For matrices, the function is evaluated element wise. ## Syntax ```js math.bitAnd(x, y) ``` ### Parameters Parameter | Type | Description --------- | ---- | ----------- `x` | number | BigNumber | Array | Matrix | First value to and `y` | number | BigNumber | Array | Matrix | Second value to and ### Returns Type | Description ---- | ----------- number | BigNumber | Array | Matrix | AND of `x` and `y` ## Examples ```js math.bitAnd(53, 131) // returns number 1 math.bitAnd([1, 12, 31], 42) // returns Array [0, 8, 10] ``` ## See also [bitNot](bitNot.md), [bitOr](bitOr.md), [bitXor](bitXor.md), [leftShift](leftShift.md), [rightArithShift](rightArithShift.md), [rightLogShift](rightLogShift.md)