thebookofshaders/glossary/log.md
2015-04-18 10:41:34 -04:00

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## 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/)