id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,difficulty 587,CR: expt should signal error on domain error,felix winkelmann,,"`expt` returns +NaN when called with a negative first argument and a non-integer second argument. With a full numeric tower this would be a complex number, but those are of course not supported in the core system. I suggest signaling an error in this case. This might break existing code that relies on +NaN being returned. ",task,closed,minor,,core libraries,4.7.x,wontfix,expt,,