Visual Studio Debugger - Visualising Intel Quadruple precision (_Quad)

Question

I'm using Intel C++ Compiler from within Visual Studio 2008. I was experimenting with the Intel quadruple precision type (_Quad). Everything seems to be working fine, except for the debugging. Visual Studio visualiser is unable to peek into _Quad values.

What's worse, the visualiser is unable to provide the type information about the _Quad value, giving enigmatic three question marks: ??? (as on the attached screenshot)

The value is 0 while it should be something else.

Would appreciate some hints on how to attack this puzzle. To work with autoexp.dat I need the VS to pickup the type, don't I?

Answer 1

_Quad is a keyword for Intel C++ compiler, which means it's type info is proprietary and not understandable by Microsoft tools. To display it in VisualStudio Debugger/IDE, you'll need VisualStudio extensions that can interpret this type for the debugger/IDE. You might want just contact Intel and see if they have any extensions for you to use in VisualStudio.