thebookofshaders/glossary/abs/README.md

## Abs
Return the absolute value of the parameter.

### Declaration
```glsl
float abs(float x)  
vec2 abs(vec2 x)  
vec3 abs(vec3 x)  
vec4 abs(vec4 x)
```

### Parameters
```x``` specify the value of which to return the absolute.

### Description
```abs()``` returns the absolute value of ```x```.

<div class="simpleFunction" data="y = abs(x); "></div>

### See Also
[sign()](/glossary/?search=sign), [min()](/glossary/?search=min), [max()](/glossary/?search=max), [Chapter 05: Shaping Functions](../05/)