## ABS Absolute Value Function

Section: Elementary Functions

### Usage

Returns the absolute value of the input array for all elements. The general syntax for its use isy = abs(x)

where `x`

is an `n`

-dimensional array of numerical type. The output
is the same numerical type as the input, unless the input is `complex`

or `dcomplex`

. For `complex`

inputs, the absolute value is a floating
point array, so that the return type is `float`

. For `dcomplex`

inputs, the absolute value is a double precision floating point array, so that
the return type is `double`

.

### Example

The following demonstrates the`abs`

applied to a complex scalar.
--> abs(3+4*i) ans = 5

The `abs`

function applied to integer and real values:

--> abs([-2,3,-4,5]) ans = 2 3 4 5

For a double-precision complex array,

--> abs([2.0+3.0*i,i]) ans = 3.6056 1.0000