# mustBeInteger

Checks that value is integer or raise an error.

## 📝 Syntax

* mustBeInteger(var)
* mustBeInteger(var, argPosition)
* C++: void mustBeInteger(const ArrayOfVector& args, int argPosition)

## 📥 Input argument

* var - a variable: all supported types and classes that implement isnumeric, islogical, all, isreal, eq and floor methods.
* argPosition - a positive integer value: Position of input argument.

## 📄 Description

mustBeInteger checks that value is integer or raise an error.

## 💡 Example

```matlab
mustBeInteger(-1)
mustBeInteger(Inf)
```

## 🔗 See also

[mustBeNumeric](https://nelson-9.gitbook.io/nelson/markdown/en/validators/mustbenumeric).

## 🕔 History

| Version | 📄 Description  |
| ------- | --------------- |
| 1.0.0   | initial version |