Category Archives: VC++

x86/x64 Numerical differences – Correction

In a previous post a truncation scheme was suggested, to circumvent x86/x64 differences in math library implementations: Since then, I accumulated some mileage with the scheme and have come to understand that line 8: -is flawed. Since we drop the … Continue reading

Posted in Algorithms, C++, VC++ | Leave a comment

Linker Weak Symbols

C++’s One-Definition-Rule roughly states that In the entire program, an object or non-inline function cannot have more than one definition; if an object or function is used, it must have exactly one definition. Which sounds like a good idea – … Continue reading

Posted in VC++ | 3 Comments

x86/x64 Library Numerical differences

There are many online sets of examples of 64 bit migration pitfalls, but I recently came across two that that appear not to be mentioned elsewhere. First, downright compiler bugs.  We still have those and some raise their head only … Continue reading

Posted in VC++ | 3 Comments

Another Look at the VS2012 Auto Vectorizer

A while ago I did some experimenting with (than beta) VS2012. After these experiments our team migrated to the 2012 IDE but kept to the 2010 toolset. Since then much had happened: an official VS2012 launch + 4 updates, rather … Continue reading

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Find Where Types are Passed by Value

Say you’re working on a large code base, and you came across several instances where some type of non-negligible size was passed as argument by value – where it was more efficient to pass by const reference. Fixing a few … Continue reading

Posted in VC++ | 2 Comments

Discovering Which Projects Depend on One

I am working with several large-ish (100+ project) solutions – and at this scale, dependency management is a very real issue. While you can easily view (and set) the dependencies of a project by viewing its references, there is no … Continue reading

Posted in VC++, Visual Studio | 2 Comments

VS2012 Migration #3: autoexp and NoStepInto Replacements

In the past I blogged quite a few times about two immensely useful albeit mostly-unofficial debugger features: watch modification via autoexp.dat, and step-into modification via NoStepInto registry key. A long while ago I raised two suggestions at MS UserVoice, to … Continue reading

Posted in Debugging, VC++ | 3 Comments