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   sci.math.symbolic      Symbolic algebra discussion      10,432 messages   

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   Message 8,816 of 10,432   
   jacob navia to All   
   How big is "infinite" precision?   
   22 Jun 15 20:17:46   
   
   From: jacob@jacob.remcomp.fr   
      
   I am building an integer package with unlimited precision for my   
   compiler system lcc-win.   
      
   I have limited the size of the numbers to 65536 numbers of 31 bits each.   
      
   That gives numbers of 2 031 616 bits, that can represent numbers up to   
   pow(2, 2031616) --> 2.596 E+157 826, i e. numbers with more than 157   
   thousand digits.   
      
   Is that too small?   
      
   You use these kind of numbers here. Have you ever used numbers that need   
   to be bigger than that?   
      
   Each number at that precision takes 248Kbytes. 4096 numbers take a GB of   
   memory.   
      
   I had the number of digits in a 32 bit number that gives really   
   "unlimited" precision but I considered that a waste. I am wrong?   
      
   Thanks for your input   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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