--- Rounds a number to the given decimal place
-- @param num
-- @param idp
--
function round(num, idp)
    local mult = 10^(idp or 0)
    return math.floor(num * mult + 0.5) / mult
end

--- Converts a number to a shorter string; e.g. 1234 to 1.23k
-- @param num
-- @param idp
--
function numberToShortString(num, idp)
    num = num or 0
    idp = idp or 2

    if num / 1000000000 > 1 then
        return string.format("%.fb", round(num / 1000000000, idp))
    elseif num / 1000000 > 1 then
        return string.format("%.fm", round(num / 1000000, idp))
    elseif num / 1000 > 1 then
        return string.format("%.fk", round(num / 1000, idp))
    else
        return string.format("%.f", round(num, idp))
    end
end