SupTan85/int

make it possible to calculate large number in Lua

int

This Project is math and calculate for large data in Lua. Waring: this module is in beta !! SO MANY BUG

why this module name is "int"? because in this module alway use integer to calculate math!

Feature

• Calculate

  • addition +
  • subtraction -
  • multiplication *
  • division \, \\
  • modulo %
  • power ^

• Equation

  • equal
  • less than
  • more than

• Other

  • tostring
  • tonumber
  • sign
  • max
  • min
  • abs
  • In Natural logarithm
  • fact Factorial function
  • exp Exponential function
  • floor
  • cfloor
  • integerlen INTEGER LEN
  • decimallen DECIMAL LEN
  • fdigitlen INTEGER LEN + DECIMAL LEN

How to use

Require a module with require function in Lua

local int = require("int")

Use this module you should to make a new object

local int = require("int")

local x = int.new("13") -- input can be a number or string! *recommend to use string*

print(x) -- output: "13"

Use Calculation operators to calculate math.

Note: only operator that in support

local int = require("int")

local x = int.new("20")
local y = int.new("10")

print(x + y) -- output: 30

---

Note: in version 148 or latest version. you can calculate int table with number without using int.new

local int = require("int")

local x = int.new("2")

print(x + 2) -- output: 4

---

Note: in version 163 or latest version. you can call some function with int table without using int

local int = require("int")

local x, y = int.new("5"), 2

if x:more(y) then
    print(x:tostring().." is more then "..y)
end

Design

This inside of int table, and this mean "101" if you use tostring function.

local example_int_table = {
    -- digit --
    [1] = 1, -- this a digit block
    [0] = 0,
    [-1] = 1,

    -- table info --
    sign = "+",

    _dlen = -1, -- digit of decimal *this for calculate a decimal* **DO NOT CHANGE. HAVE LIMIT!!**
    _size = 1 -- mean per size of block *just maximum digit per value in the digit block* **DO NOT CHANGE. HAVE LIMIT!!**
}

Limit

• Maximum digit of integer is 9223372036854775806

  • Set _size to 9 maximum digit of integer is 83010348331692982254! (9223372036854775806 * 9)

• Maximum digit of decimal is 9223372036854775808

  • Set _size to 9 maximum decimal of integer is 83010348331692982272! (9223372036854775808 * 9)