Editing Module:Sandbox/IJReid/Mathematics

--Module to calculate basic math values
mathematics = {}

mathematics.addition = function(input)				--Addition function
	local sum = 0									--Define variable for use in loop
	for i, arg in pairs(input.args) do				--Loop to run through all arguments
		sum = sum + arg								--Add argument value to sum
	end
	return sum										--Output the sum to the module
end

mathematics.subtraction = function(input)			--Subtraction function
	local dif = input.args[1] - input.args[2]		--Subtract second argument from first
	return dif										--Outpud difference to module
end

mathematics.multiplication = function(input)		--Multiplication function
	local product = 1								--Set product as 1 (so multiplication of it works)
	local pi = 3.141592653589793					--Set pi as 15 digits of precision
	for i, arg in pairs(input.args) do				--Allow multiple arguments
		if (arg == "pi" or arg == "π" or arg == 3.14) then	--Set pi to π argument
			arg = pi
		else
			product = product * arg					--Multiply arguments together
		end
	end
	return product									--Output product to module
end

mathematics.division = function(input)				--Division function
	local quotient = input.args[1] / input.args[2]	--Divide arg1 by arg2
	return quotient									--Output quotient to module
end

return mathematics									--Output module to place of use