

### extramath.lua ###

some extra math functions



#### Undocumented methods ####

<a name="signal.xmath.round"></a>
 * `signal.xmath.round(num)`
<a name="signal.xmath.log2"></a>
 * `signal.xmath.log2(x)`
<a name="signal.xmath.nextpow2"></a>
 * `signal.xmath.nextpow2(x)`
