# isinf

Check for Infinity entries.

## 📝 Syntaxe

* tf = isinf(M)

## 📥 Argument d'entrée

* M - a variable

## 📤 Argument de sortie

* tf - logical: result of 'isinf'.

## 📄 Description

isnan returns a logical array which is true where elements of M are Infinity values.

## 💡 Exemple

```matlab
isnan(pi)
isinf(Inf)
isinf(-Inf)
isinf(int32(3))
X = sparse([1 2 NaN 3 0 Inf 0 4]);
R = isinf(X)
```

## 🔗 Voir aussi

[isnan](https://nelson-9.gitbook.io/nelson/markdown/fr/elementary_functions/isnan).

## 🕔 Historique

| Version | 📄 Description   |
| ------- | ---------------- |
| 1.0.0   | version initiale |
