Calling log2() with any argument crashes E2

[Tris-B]

Seems like calling log2() at any place in E2 with any argument will crash out

Test E2:

@name 
@inputs 
@outputs A:number
@persist
@trigger 
@strict

A = log2(2)

Error:

sv: Expression 2 (generic): Internal error 'entities/gmod_wire_expression2/core/number.lua:347: attempt to call global 'log2' (a nil value)' at line 8, char 1