sign {base} | R Documentation |

## Sign Function

### Description

`sign`

returns a vector with the signs of the corresponding
elements of `x`

(the sign of a real number is 1, 0, or `-1`

if the number is positive, zero, or negative, respectively).

Note that `sign`

does not operate on complex vectors.

### Usage

```
sign(x)
```

### Arguments

### Details

This is an internal generic primitive function: methods
can be defined for it directly or via the
`Math`

group generic.

### See Also

`abs`

### Examples

```
sign(pi) # == 1
sign(-2:3) # -1 -1 0 1 1 1
```

[Package

*base* version 4.3.0

Index]