> For the complete documentation index, see [llms.txt](https://levelalfaomega.gitbook.io/unity-mugen/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://levelalfaomega.gitbook.io/unity-mugen/unity-mugen/trigger-list/log-math.md).

# Log (math)

Takes two arguments a and b, and returns the base-a logarithm of b.

### Format: 

           Log(exp1,exp2)

### Arguments: 

           exp1

                      Expression giving the base of the logarithm. Must be positive.

           exp2

                      Expression giving the value to take the logarithm of. Must be positive.

### Return type: 

           float

### Error conditions:

           Returns bottom if either of exp1 or exp2 evaluates to bottom, or if either of exp1 or exp2 is not positive.

### Examples:

> ```
> value=log(2,64)
>   Sets value to the base 2 log of 64, which is 6.0.
> ```