# R - is.infinite() Function

The R is.infinite() function is used to check if a numeric value is infinite and returns a boolean result. A complex number is regarded as infinite if either the real or imaginary part is infinite.

### Syntax

```is.infinite(x)
```

### Parameters

 `x` `Required. `Specify column to compute on.

### Return Value

Returns TRUE if the value is infinite, FALSE otherwise.

### Example:

The example below shows the usage of is.infinite() function.

```#operating on single element atomic vector
print(is.infinite(0.0/0.0))
print(is.infinite(10.5))
print(is.infinite(1.0/0.0))
print(is.infinite(Inf+2i))

cat("\nOperating on vector\n")
#operating on vector
v <- c(NaN, Inf, 20.8, NaN+2i)
print(is.infinite(v))

cat("\nOperating on matrix\n")
#operating on matrix
m <- matrix(c(1, Inf, 3, 4, Inf, NaN), nrow=2)
print(is.infinite(m))

cat("\nOperating on first column of matrix\n")
#operating on first column of matrix
print(is.infinite(m[,1]))
```

The output of the above code will be:

```[1] FALSE
[1] FALSE
[1] TRUE
[1] TRUE

Operating on vector
[1] FALSE  TRUE FALSE FALSE

Operating on matrix
[,1]  [,2]  [,3]
[1,] FALSE FALSE  TRUE
[2,]  TRUE FALSE FALSE

Operating on first column of matrix
[1] FALSE  TRUE
```

❮ R Math Functions

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