Refactor and clean up of math.fft
Refactor and clean up of math.fft

slavapestov/factor,ceninan/factor,tgunr/factor,factor/factor,bjourne/factor,mrjbq7/factor,dharmatech/factor,ceninan/factor,nicolas-p/factor,kingcons/factor,bpollack/factor,ehird/factor,tgunr/factor,sarvex/factor-lang,mcandre/factor,jwmerrill/factor,Keyholder/factor,dch/factor,mcandre/factor,ehird/factor,erg/factor,dharmatech/factor,bpollack/factor,kingcons/factor,mrjbq7/factor,nicolas-p/factor,sarvex/factor-lang,bjourne/factor,seckar/factor,tgunr/factor,dch/factor,erg/factor,slavapestov/factor,cataska/factor,AlexIljin/factor,tgunr/factor,dch/factor,mrjbq7/factor,bjourne/factor,sarvex/factor-lang,tgunr/factor,AlexIljin/factor,cataska/factor,factor/factor,jwmerrill/factor,bjourne/factor,littledan/Factor,littledan/Factor,cataska/factor,slavapestov/factor,dch/factor,sarvex/factor-lang,slavapestov/factor,sarvex/factor-lang,nicolas-p/factor,AlexIljin/factor,mcandre/factor,bjourne/factor,mcandre/factor,littledan/Factor,bpollack/factor,dch/factor,mrjbq7/factor,factor/factor,AlexIljin/factor,seckar/factor,slavapestov/factor,mrjbq7/factor,seckar/factor,AlexIljin/factor,sarvex/factor-lang,slavapestov/factor,slavapestov/factor,erg/factor,bjourne/factor,bpollack/factor,dch/factor,bpollack/factor,ehird/factor,erg/factor,Keyholder/factor,nicolas-p/factor,AlexIljin/factor,factor/factor,mcandre/factor,erg/factor,mrjbq7/factor,factor/factor,bpollack/factor,nicolas-p/factor,cataska/factor,erg/factor,bpollack/factor,sarvex/factor-lang,mcandre/factor,Keyholder/factor,nicolas-p/factor,AlexIljin/factor,tgunr/factor,erg/factor,bjourne/factor,littledan/Factor,nicolas-p/factor,dharmatech/factor,jwmerrill/factor,factor/factor,kingcons/factor,kingcons/factor,ceninan/factor,ceninan/factor,mcandre/factor