(42, all flavours) Integer Division - how?

[Albert Chan]

(12-13-2020 07:43 PM)Thomas Okken Wrote:  

(12-13-2020 06:41 PM)Albert Chan Wrote:  It would be nice if Free42 exposed FMA(a,b,c) to the user ...

Noted...

Free42 FMA already work in progress !
https://github.com/thomasokken/free42

With FMA, idiv simplified to this. (code optimized for speed, and removed b>0 requirement)

PHP Code:

function idiv5(a,b)
    local c = a/b
    local q = floor(c)
    if b > 0 then b=-b else a=-a end
    if q == c and fma(q,b,a) < 0 then return q-1 end
    return q
end