Module:Math: Difference between revisions

Module:Math (view source)

983 bytes added , 11 March 2021

typo fix

Anonymous user

@@ Line 532: / Line 532: @@
 	return formatted_num
+end
+--[[
+divide
+Implements the division operator
+Usage:
+{{#invoke:Math | divide | x | y | round= | precision= }}
+--]]
+function wrap.divide(args)
+	local x = args[1]
+	local y = args[2]
+	local round = args.round
+	local precision =  args.precision
+	if not yesno then
+		yesno = require('Module:Yesno')
+	end
+	return p._divide(x, y, yesno(round), precision)
+end
+function p._divide(x, y, round, precision)
+	if y == nil or y == "" then
+		return err("Empty divisor")
+	elseif not tonumber(y) then
+		if type(y) == 'string' and string.sub(y, 1, 1) == '<' then
+			return y
+		else
+			return err("Not a number: " .. y)
+		end
+	elseif x == nil or x == "" then
+		return err("Empty dividend")
+	elseif not tonumber(x) then
+		if type(x) == 'string' and string.sub(x, 1, 1) == '<' then
+			return x
+		else
+			return err("Not a number: " .. x)
+		end
+	else
+		local z = x / y
+		if round then
+			return p._round(z, 0)
+		elseif precision then
+			return p._round(z, precision)
+		else
+			return z
+		end
+	end
 end