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          Let's face it debugger multiprecision numbers is hard - simply because
          we can't easily inspect the value of the numbers. Visual C++ provides a
          partial solution in the shape of "visualizers" which provide
          improved views of complex data structures, these visualizers need to be
          added to the [Visualizer] section of autoexp.dat
          located in the Common7/Packages/Debugger
          directory of your Visual Studio installation. The actual visualizer code
          is in the sandbox here
          - just cut and paste the code into your autoexp.dat
          file.
        
| ![[Note]](../../../../../../../doc/src/images/note.png) | Note | 
|---|---|
| 
            These visualizers have only been tested with VC10, also given the ability
            of buggy visualizers to crash your Visual C++ debugger, make sure you
            back up  | 
          The first visualizer provides improved views of debug_adaptor:
        
           
        
The next visualizer provides improved views of cpp_int: small numbers are displayed as actual values, while larger numbers are displayed as an array of hexadecimal parts, with the most significant part first.
Here's what it looks like for small values:
           
        
And for larger values:
           
        
          There is also a ~raw
          child member that lets you see the actual members of the class:
        
           
        
          The visualizer for cpp_dec_float
          shows the first few digits of the value in the preview field, and the full
          array of digits when you expand the view. As before the ~raw child gives you access to the actual
          data members:
        
          