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c++ Programming Glossary: branchWhy is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array order should not matter. java c performance optimization branch prediction share improve this question You are the victim.. share improve this question You are the victim of branch prediction fail. What is Branch Prediction Consider a railroad.. Consider an if statement At the processor level it is a branch instruction You are a processor and you see a branch. You have..
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array You are the victim of branch prediction fail. What is Branch Prediction Consider a railroad junction Image by Mecanismo from.. branch predictors are virtually useless. Further Reading Branch_predictor . As hinted from above the culprit is this if statement.. Core i7 920 @ 3.5 GHz C Visual Studio 2010 x64 Release Branch Random seconds 11.777 Branch Sorted seconds 2.352 Branchless..
How to detect the amount of stack space available to my program? http://stackoverflow.com/questions/1345478/how-to-detect-the-amount-of-stack-space-available-to-my-program ask yourself what you would want to do once you have them Branch into different implementations This sounds like a maintenance..
What to do about a 11000 lines C++ source file? http://stackoverflow.com/questions/3615789/what-to-do-about-a-11000-lines-c-source-file trying to merge between branches. Stop doing that. Branch the file permanently perhaps by renaming it in each branch...
Portable branch prediction hints http://stackoverflow.com/questions/3702903/portable-branch-prediction-hints guard it with some kind of #if to protect other compilers. Branch prediction hints can theoretically express a complete description..
Uses for negative zero floating point value? http://stackoverflow.com/questions/7946913/uses-for-negative-zero-floating-point-value complex elementary functions 2 . The first reference is Branch Cuts for Complex Elementary Functions or Much Ado About Nothing's..
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