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  4. 64 or 32 bit

64 or 32 bit

Scheduled Pinned Locked Moved C#
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  • J Jared Parsons

    How can you determine at run time in C# if you're running on a 32 or 64 bit machine Jared Parsons jaredp@beanseed.org http://jaredparsons.blogspot.com/[^]

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    D Offline
    Divyang Mithaiwala
    wrote on last edited by
    #2

    Hello Jared, I am not sure about this method. Becoz i have no PC of 64 bit. But you just try. Check size of 'int'. like val = sizeof(int); if it is 4 byte then 32 bit machine & if 8 byte then 64 bit machine. For my 32 bit machine it is 4. Regards, Divyang Mithaiwala

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    • J Jared Parsons

      How can you determine at run time in C# if you're running on a 32 or 64 bit machine Jared Parsons jaredp@beanseed.org http://jaredparsons.blogspot.com/[^]

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      J Offline
      Joe Woodbury
      wrote on last edited by
      #3

      Values are the same size for both 32 and 64-bit (an int is 4 bytes on both.) I don't believe there is a simple, standard way to detect this. Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke

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      • J Joe Woodbury

        Values are the same size for both 32 and 64-bit (an int is 4 bytes on both.) I don't believe there is a simple, standard way to detect this. Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke

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        Divyang Mithaiwala
        wrote on last edited by
        #4

        Hello Joe, Sorry for my answer. But i think that int data type is for best CPU performance. And for fix length type you have to take long & short. Regards, Divyang Mithaiwala

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        • D Divyang Mithaiwala

          Hello Joe, Sorry for my answer. But i think that int data type is for best CPU performance. And for fix length type you have to take long & short. Regards, Divyang Mithaiwala

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          Guffa
          wrote on last edited by
          #5

          The int data type is just an alias for System.Int32. A long is System.Int64 and short is System.Int16. MSDN: C# Built-in Types[^] --- b { font-weight: normal; }

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          • J Jared Parsons

            How can you determine at run time in C# if you're running on a 32 or 64 bit machine Jared Parsons jaredp@beanseed.org http://jaredparsons.blogspot.com/[^]

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            L Offline
            leppie
            wrote on last edited by
            #6

            sizeof(IntPtr) should give you the answer :)

            xacc.ide-0.1.2.15
            Now with a grid!

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            • J Jared Parsons

              How can you determine at run time in C# if you're running on a 32 or 64 bit machine Jared Parsons jaredp@beanseed.org http://jaredparsons.blogspot.com/[^]

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              Divyang Mithaiwala
              wrote on last edited by
              #7

              You can use val = IntPtr.size But it will give bit of platform not a machine. Which is some time difference. For more information click here Regards, Divyang Mithaiwala

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              • G Guffa

                The int data type is just an alias for System.Int32. A long is System.Int64 and short is System.Int16. MSDN: C# Built-in Types[^] --- b { font-weight: normal; }

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                D Offline
                Divyang Mithaiwala
                wrote on last edited by
                #8

                Hello Guffa, Actually i am not wrong with my thing. But it will not work in C#. Please refer this. Regards, Divyang Mithaiwala.

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                • J Jared Parsons

                  How can you determine at run time in C# if you're running on a 32 or 64 bit machine Jared Parsons jaredp@beanseed.org http://jaredparsons.blogspot.com/[^]

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                  Nicholas Butler
                  wrote on last edited by
                  #9

                  Hi I presume you have a 32-bit assembly and want to know if you are running on a native 32-bit machine or under WOW64 on a native 64-bit machine. There is an API method IsWow64Process you can call using pinvoke - I could not find a managed method. ---------------------------- Be excellent to each other :)

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                  • D Divyang Mithaiwala

                    Hello Guffa, Actually i am not wrong with my thing. But it will not work in C#. Please refer this. Regards, Divyang Mithaiwala.

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                    Guffa
                    wrote on last edited by
                    #10

                    Yes, you are of course right, in the same way as pigs can fly. If the pig is a bird, it can fly. This will of course not work if the pig is a pig. ;) --- b { font-weight: normal; }

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                    • D Divyang Mithaiwala

                      Hello Jared, I am not sure about this method. Becoz i have no PC of 64 bit. But you just try. Check size of 'int'. like val = sizeof(int); if it is 4 byte then 32 bit machine & if 8 byte then 64 bit machine. For my 32 bit machine it is 4. Regards, Divyang Mithaiwala

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                      J Offline
                      Jared Parsons
                      wrote on last edited by
                      #11

                      Divyang Mithaiwala wrote:

                      if it is 4 byte then 32 bit machine & if 8 byte then 64 bit machine. For my 32 bit machine it is 4.

                      That doesn't work in C# because int is guaranteed to be 4 bytes regardless of the architecture. Jared Parsons jaredp@beanseed.org http://jaredparsons.blogspot.com/[^]

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                      • L leppie

                        sizeof(IntPtr) should give you the answer :)

                        xacc.ide-0.1.2.15
                        Now with a grid!

                        J Offline
                        J Offline
                        Jared Parsons
                        wrote on last edited by
                        #12

                        Or better yet IntPtr.Size. That looks like the right approach though. Thanks! Jared Parsons jaredp@beanseed.org http://jaredparsons.blogspot.com/[^]

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