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c++ Programming Glossary: hitWhy 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 So modern branch predictors will typically achieve 90 hit rates. But when faced with unpredictable branches with no recognizable..
Automatically stop Visual C++ 2008 build at first compile error? http://stackoverflow.com/questions/134796/automatically-stop-visual-c-2008-build-at-first-compile-error many failed compiles. I usually just watch for errors and hit ctrl break to stop the build manually. Is there a way to configure..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code improve this question Preliminaries Modern computer architectures feature complex memory hierarchies registers typically.. the memory hierarchy smallest fastest to slowest . A cache hit miss usually refers to a hit miss in the highest level of cache.. fastest to slowest . A cache hit miss usually refers to a hit miss in the highest level of cache in the CPU by highest level..
How to compile a 64-bit application using Visual C++ 2010 Express? http://stackoverflow.com/questions/1865069/how-to-compile-a-64-bit-application-using-visual-c-2010-express press it. In the dialog that comes up find your project hit the Platform drop down select New then select x64. Now change..
What platforms have something other than 8-bit char? http://stackoverflow.com/questions/2098149/what-platforms-have-something-other-than-8-bit-char for which char is 16 bits. DSPs are a bit of a niche architecture I suppose. Then again at the time hand coded assembler.. using a size you didn't expect. At the very least if I hit a case where I had a good reason to assume it then I'd assert..
Is there a max array length limit in C++? http://stackoverflow.com/questions/216259/is-there-a-max-array-length-limit-in-c algorithm as for example the p Pollard for school and hit this wall of integers and length of arrays representation. ..
Difference between float and double http://stackoverflow.com/questions/2386772/difference-between-float-and-double about 3e38 but double is about 1.7e308 so using float can hit Infinity much easier than double for something simple e.g. computing.. as IEEE double precision. Nevertheless for most architectures gcc MSVC x86 x64 ARM float is indeed a IEEE single precision..
What is the lifetime of a static variable in a C++ function? http://stackoverflow.com/questions/246564/what-is-the-lifetime-of-a-static-variable-in-a-c-function to the function. Obviously this is a small performance hit but what's more of a concern is that this flag is not guaranteed..
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle and for my simple programme . My Core i5 750 Nahelem architecture doesn't like alternating add's and mul's and seems unable.. if grouped in 3's it suddenly works like magic. Other architectures possibly Sandy Bridge and others appear to be able to.. addsd xmm9 xmm2 addsd xmm13 xmm2 ... c c optimization architecture assembly share improve this question I've done this..
I don't want my Excel Add-In to return an array (instead I need a UDF to change other cells) http://stackoverflow.com/questions/8520732/i-dont-want-my-excel-add-in-to-return-an-array-instead-i-need-a-udf-to-change select 3 cells enter my formula in the top cell and then hit Ctrl Shift Enter to fill out the array. I use XLW version 5..
Need for predictable random generator http://stackoverflow.com/questions/910215/need-for-predictable-random-generator Let's say that a player has 20 chance to get a critical hit with his sword. That means 1 out of 5 hits should be critical... get a critical hit with his sword. That means 1 out of 5 hits should be critical. The problem is I got very bad real life.. bad real life results sometimes players get 3 crits in 5 hits sometimes none in 15 hits. Battles are rather short 3 10 hits..
Eclipse CDT C++11/C++0x support http://stackoverflow.com/questions/9131763/eclipse-cdt-c11-c0x-support Value blank. Hit Apply do whatever it asks you to do then hit OK. There is a description of this in the Eclipse FAQ now as..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python But I'm still curious if people think this performance hit from std string getline is typical and reasonable. Edit 4 was..
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