which result is more reliable?

[LLIEPLLIEHb]

 

local points = {{0,0},{1,7},{7,7},{15,7},{30,30},{7,14},{14,14},{25,25},{25,18},{20,18},{10,25}}
local p1x,p1y = points[1][1],points[1][2]
local p2x,p2y = points[5][1],points[5][2]
local orig = getDistanceBetweenPoints2D ( p1x,p1y,p2x,p2y )
local analog = math.sqrt((p2x - p1x) * (p2x - p1x) + (p2y - p1y) * (p2y - p1y))

iprint("original-", orig)
iprint("analog-", analog)

 

Debug Script 3

 

[Incama]

Does it always return the same numbers after multiple runs?

 

IMHO you're seeing float point math's inaccuracy here.

[LLIEPLLIEHb]

Returns a static value after restarting