home bbs files messages ]

Forums before death by AOL, social media and spammers... "We can't have nice things"

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

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]

   Message 8,772 of 10,432   
   jacob navia to All   
   Re: Test for overflow   
   31 Mar 15 19:48:53   
   
   XPost: comp.lang.c   
   From: jacob@jacob.remcomp.fr   
      
   Le 31/03/2015 19:41, James Kuyper a écrit :   
   > I think so, so long as 'digit' is no wider than 'value'   
      
   "Value" is an unsigned long long. To be able to overflow by adding a   
   number smaller than 37, "value" *must* be bigger than 2^64 - 37.   
      
   If an overflow occurs, at most the last 6 bits could be set, what is   
   surely smaller than a number that is bigger thzn 2^64 - 37!!   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]


(c) 1994,  bbs@darkrealms.ca