[Cfp-interest 1671] Re: intmax_t removal

[David Hough CFP]

> how would one do a loan for 3.5 years?  

It would be for 42 months, or for 14 quarters.

> what 754 intended for compoundn, pown, and rootn.

Although these functions can sometimes
be analytically continued for non-integral n,
their common applications do not benefit from that, nor from
the extra effort to determine if n is non-integral and what to do 
if not.    Allowing the implementer to know that n is integral 
seems more efficient.