Module:Percentage/sandbox explained

---- This module implements --local p =

local math_module = require("Module:Math")local precision = math_module._precisionlocal sortkey = require("Module:Sortkey")

local function rnd(num, digits) -- This function implements return math_module._precision_format(tostring(num), digits)end

local function oom(num) -- This function implements return math_module._order(tostring(num))end

function _nonscinote(num) -- This function undoes scientific notation if mw.ustring.match(num or , '^%s*(%d)%.(%d+)

]*>×10^{([%-−]*)(%d)}%s*$') then local a,b,c,d = mw.ustring.match(num or , '^%s*(%d)%.(%d+)]*>×10^{([%-−]*)(%d)}%s*$') d = tonumber(d) or 1 if c ~= then return '0.' .. mw.ustring.rep('0', d - 1) .. a .. b else return a .. mw.ustring.sub(b .. mw.ustring.rep('0', d), 1, d) end end return numend

local function fmtout(num,snote) if snote then return _nonscinote(num) else return num endend

function _percentage(n1, n2, prec, suffix, pad, sigfig, sn) local pct = 100*n1/n2 skey = '

-- prec = math.floor(prec)

if sigfig ~= then if pct ~= 0 then return skey .. fmtout(rnd(pct, tonumber(sigfig) - oom(pct) - 1), sn) .. suffix else return skey .. fmtout(rnd(pct, tonumber(sigfig) - 3), sn) .. suffix end end if pad ~= then return skey .. fmtout(rnd(pct, prec), sn) .. suffix end prec = (prec < 0) and 0 or prec if pct ~= 0 then pct = ((pct < 0) and -1 or 1)*math.floor(math.abs(pct * 10^prec) + 0.5) / 10^prec end return skey .. fmtout(pct, sn) .. suffixend

function p.main(frame) local args = frame.args[1] and frame.args or frame:getParent.args local yesno = require('Module:Yesno') return _percentage(tonumber(args[1]) or 0, tonumber(args[2]) or 100, tonumber(args[3]) or tonumber(args['pad']) or 0, args['%'] or '%', args['pad'] or , args['sigfig'] or , yesno(args['nonscinote'] or 'no') )end

return p