From: tr.17687@z991.linuxsc.com   
      
   Michael S  writes:   
      
   [regarding rand() and srand()]   
      
   > Pay attention that C Standard only requires for the same seed to always   
   > produces the same sequence.  There is no requirement that different   
   > seeds have to produce different sequences.   
   > So, for generator in your example, implementation like below would be   
   > fully legal.  Personally, I wouldn't even consider it as particularly   
   > poor quality:   
   >   
   > void srand(unsigned seed ) { init = seed | 1;}   
      
   It seems better to do, for example,   
      
     void srand(unsigned seed ) { init = seed - !seed;}   
      
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