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2029Re: [PrimeNumbers] Re: proth error

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  • Yves Gallot
    Jul 31, 2001
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      There are some commercial programs which detect the UMR (Uninitialized
      Memory Read) and other classical errors. I use one of them at office to
      check Proth's code. But of course an UMR is still possible in a case that I
      didn't test.

      Yves

      > Notice that these intermittent type of errors can be also generated
      > by a bug on the program, when a buffer is not initialized, for
      > instance. In this case it is possible that you can't reproduce the
      > error. Generally it works OK, but sometimes (depending on other
      > programs ran by the computer) the buffer starts with a pattern that
      > makes the program fail.
      >
      > I'm not saying that this is the case in Yves' program, but it
      > happened to me. I also thought that it was a hardware malfunction,
      > but after several days I found the error in my program.
      >
      > Have a nice day!
      >
      > Dario Alejandro Alpern
      > Buenos Aires - Argentina
      > http://www.alpertron.com.ar/ENGLISH.HTM
      >
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