0 1#:13r5
2 3r5
On Thu, Jul 5, 2018, 8:20 PM Skip Cave <[email protected]> wrote:
> I find that the rational fractions capability in J comes in handy for
> various applications. However, It occasionally comes in handy to be able to
> convert a rational fraction into an integer and a remainder fraction. I put
> together a function 'qr' (quotient/remainder) to input pure rational
> fractions and output integer - fraction representations.
>
> Here's the function:
>
> qr=. 3 : '(<.%/a),(1{a)%~|~/a=.2&x:y'
>
>
> Trying it out:
>
> qr 13r5
>
> 2 3r5
>
> qr 136r44
>
> 3 1r11
>
> qr 38r13
>
> 2 12r13
>
> My qr function is pretty kludgy. Is there a shorter, more tacit version I
> could use? Also can it be made to operate on a vector of rational
> fractions, to give a 2xn matrix of integer/fraction results?
>
> qr 13r5 136r44 38r13
>
> 2 3r5
>
> 3 1r11
>
> 2 12r13
>
> Skip
>
> Skip Cave
> Cave Consulting LLC
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