Module:WeightToPercent

Documentation for this module may be created at Module:WeightToPercent/doc

local p = {}

function p.convert(frame)
	-- frame.args values are strings in MediaWiki, so force numeric conversion
	local weight = tonumber(frame.args.weight)
	local totalweight = tonumber(frame.args.total)

	if weight == nil then
		return "ERROR: weight input (arg 'weight') is nil or not a number"
	elseif totalweight == nil then
		return "ERROR: totalweight input (arg 'total') is nil or not a number"
	elseif totalweight == 0 then
		return "ERROR: totalweight (arg 'total') is 0"
	elseif weight == 0 then
		return 0
	end

	return tonumber(string.format("%.1f", (weight * 100) / totalweight))
end

return p