API tools faq
paste
Advertisement
kenan238

infinite gml float precision glitch (at the cost of performance)

kenan238
Jun 16th, 2024 (edited)
150
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
Game Maker 1.87 KB | None | 0 0
raw download clone embed print report
  1. function BigFloat (nbr, decimal) constructor
  2. {
  3.     self.integer = ""
  4.     self.decimal = ""
  5.    
  6.     if typeof(nbr) == "number" && is_undefined(decimal)
  7.     {
  8.         var int = floor(nbr)
  9.         self.decimal = string(nbr - int)
  10.         self.integer = string(int)
  11.     }
  12.     else
  13.     {
  14.         self.integer = string(nbr)
  15.        
  16.         if !is_undefined(decimal)
  17.             self.decimal = string(decimal)
  18.     }
  19.    
  20.     static AddStrings = function (a, b, carry = 0)
  21.     {
  22.         var result = "";
  23.        
  24.         while string_length(a) < string_length(b)
  25.             a = "0" + a
  26.         while string_length(b) < string_length(a)
  27.             b = "0" + b
  28.        
  29.         // add from right to left
  30.         for (var i = string_length(a); i > 0; i--)
  31.         {
  32.             var d1 = real(string_char_at(a, i))
  33.             var d2 = real(string_char_at(b, i))
  34.             var sum = d1 + d2 + carry;
  35.             carry = floor(sum / 10);
  36.             result = string(sum % 10) + result;
  37.         }
  38.        
  39.         return
  40.         {
  41.             result,
  42.             carry
  43.         }
  44.     }
  45.    
  46.     static Add = function (b)
  47.     {
  48.         if typeof(b) == "number"
  49.             b = new BigFloat(b)
  50.            
  51.         var d1 = self.decimal;
  52.         var d2 = b.decimal;
  53.        
  54.         var i1 = self.integer;
  55.         var i2 = b.integer;
  56.        
  57.         // pad with zeros
  58.         while string_length(d1) < string_length(d2)
  59.             d1 += "0"
  60.         while string_length(d2) < string_length(d1)
  61.             d2 += "0"
  62.        
  63.         // add decimal parts from right to left
  64.         var d_res = self.AddStrings(d1, d2)
  65.        
  66.         var decimal_part = d_res.result
  67.        
  68.         // now for the integer parts, with the carry from the previous decimal addition
  69.         // pad them with LEADING zeros
  70.         while string_length(i1) < string_length(i2)
  71.             i1 = "0" + i1
  72.         while string_length(i2) < string_length(i1)
  73.             i2 = "0" + i2
  74.        
  75.         var i_res = self.AddStrings(i1, i2, d_res.carry)
  76.        
  77.         var integer_part = i_res.result
  78.         if i_res.carry > 0
  79.             integer_part = string(i_res.carry) + integer_part
  80.        
  81.         return new BigFloat(integer_part, decimal_part)
  82.     }
  83.    
  84.     static ToString = function ()
  85.     {
  86.         return self.integer + "." + self.decimal
  87.     }
  88. }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement
Public Pastes
Advertisement
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!