# isnan

Tests if a value is not a number.

R = isnan(A)

## Inputs

A
The input to be tested for NaN values.
Type: double | integer | char | string
Dimension: scalar | string | vector | matrix

## Outputs

R
Each element of R is a logical value indicating whether the corresponding element of A is not a number.

## Example

R = isnan([1, NaN, 0/0])
R = [0 1 1]