val (+/) : t -> t -> t
alias for Num.addn
val (-/) : t -> t -> t
alias for Num.subn
val (*/) : t -> t -> t
alias for Num.multn
val (//) : t -> t -> t
alias for Num.divn
val (*./) : float -> t -> t
alias for Num.multf
val (/./) : t -> float -> t
alias for Num.divf