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# Function or

Logical `or`. Test if at least one value is defined with a nonzero/nonempty value.
For matrices, the function is evaluated element wise.


## Syntax

```js
math.or(x, y)
```

### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`x` | number &#124; BigNumber &#124; Complex &#124; Unit &#124; Array &#124; Matrix | First value to check
`y` | number &#124; BigNumber &#124; Complex &#124; Unit &#124; Array &#124; Matrix | Second value to check

### Returns

Type | Description
---- | -----------
boolean &#124; Array &#124; Matrix |  Returns true when one of the inputs is defined with a nonzero/nonempty value.


## Examples

```js
math.or(2, 4);   // returns true

a = [2, 5, 0];
b = [0, 22, 0];
c = 0;

math.or(a, b);   // returns [true, true, false]
math.or(b, c);   // returns [false, true, false]
```


## See also

[and](and.md),
[not](not.md),
[xor](xor.md)
