XPost: comp.lang.c   
   From: jacob@jacob.remcomp.fr   
      
   Hi the math experts!   
      
   When parsing a digit sequence I test for overflow not by calculating the   
   maximum number of digits allowed but just with the test   
      
   tvalue = value * base;   
      
   if (tvalue < value) {   
       // overflow detected   
   }   
      
   I am assuming then that   
      
   if value * base > 2^64 then   
       value * base mod 2^64 < value   
      
   for base >= 2 and base <= 36.   
      
   Is this correct?   
      
   I do not have the proof of it. Maybe one of the math people can help me out?   
      
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