[sv-bc] Sysfunc to ask about signedness?

Should there be a standard system function to ask during conditional
generate whether a type parameter (for example) is signed?  It's not
strictly necessary, because a simple macro will do the job -

 

     `define IS_SIGNED(x) (type(x)'('1) < type(x)'('0))

 

but it's still surprising that there's no standard system function for
this.

 

-- Brad