Module:Number

--[[

-- ]] -- -- Number manipulation methods -- -- Many methods are already available in the math library, so this will be fairly small --

local p = {}

-- -- Rounds a number to a specified number of decimal places -- -- If dp is not specified, it defaults to zero -- based on  -- function p._round( num, dp ) if not num then return end local mult = 10 ^ ( dp or 0 ) return math.floor( num * mult + 0.5 ) / mult end

function p.round( frame ) return p._round( frame.args[1], frame.args[2] ) end

-- -- Expands a shorthand number to an actual number -- -- @example 3.5k -> 3500 -- @example 10m -> 10000000 -- -- Returns the string if it is not a valid number --

function p._short( str ) local num = str:sub( 1, -2 ) local char = str:sub( -1 ) if tonumber( num ) then if char == 'k' then num = num * 10^3 elseif char == 'm' then num = num * 10^6 elseif char == 'b' then -- strip trailing letter num = num * 10^9 else return str end return num else return str end end

function p.short( frame ) return p._short( frame.args[1] ) end

return p