MPFR C++ Debugger Visualizer in Visual Studio

Built-in debugger in Visual Studio has very nice extension capabilities. One particularly useful feature – developer can create custom visualizers for his own complex data types. Usually interactive debugger just shows data members of user-defined (and unknown to him) classes and structures, e.g.:

Obviously this is not very handy. In example above mpreal is arbitrary precision floating-point numeric type. It is only natural to show variables of the type as numbers, not as collection of low-level data pointers and properties.

Alexei Zubanov came up with neat idea on how to marry debugger with mpreal numbers in simplest way possible. As a result of our joint efforts MPFR C++ and Visual Studio Debugger play together well now:

To enable this feature user needs latest version of MPFR C++.
Plus she should add following statement: mpfr::mpreal=<DebugView> to the file autoexp.dat, which is located in [Visual Studio Installation Folder]\Common7\Packages\Debugger\.

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