thebookofshaders/glossary/log.md

## Log
Return the natural logarithm of the parameter

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

### Parameters
```x``` s### Declarationpecify the value of which to take the natural logarithm.

### Description
```log()``` returns the natural logarithm of ```x```.

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

### See Also

[log2](index.html#log2.md), [exp](index.html#exp.md), [exp2](index.html#exp2.md), [Chapter 05: Shaping Functions](../05/)