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c++ Programming Glossary: sizesHow do malloc() and free() work? http://stackoverflow.com/questions/1119134/how-do-malloc-and-free-work Every memory chunk needs additional data and with smaller sizes more fragmentation happens. The free list is also the first.. list for example storing the chunks in lists sorted by sizes. But all optimizations also have their own limitations. Why..
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513? http://stackoverflow.com/questions/11413855/why-is-transposing-a-matrix-of-512x512-much-slower-than-transposing-a-matrix-of some experiments on square matrices of different sizes a pattern came up. Invariably transposing a matrix of size 2^n..
Good C++ GUI library for Windows http://stackoverflow.com/questions/115045/good-c-gui-library-for-windows of Delphi I cry every time when I have to specify control sizes by hand... Free for commercial use . But if some library is..
Why isn't sizeof for a struct equal to the sum of sizeof of each member? http://stackoverflow.com/questions/119123/why-isnt-sizeof-for-a-struct-equal-to-the-sum-of-sizeof-of-each-member return a size larger for a structure than the total sizes of the structure's members c c sizeof c faq share improve.. are stored at byte addresses that are multiples of their sizes. Here's an example using typical settings for an x86 processor..
Segmentation fault on large array sizes http://stackoverflow.com/questions/1847789/segmentation-fault-on-large-array-sizes fault on large array sizes The following code gives me a segmentation fault when run on..
http://stackoverflow.com/questions/2795023/c-template-typedef Vector column vector which is equivalent to a Matrix with sizes N and 1. Something like that typedef Matrix N 1 Vector N Which..
What does 'unsigned temp:3' mean? [duplicate] http://stackoverflow.com/questions/2950029/what-does-unsigned-temp3-mean careful. the size of the structure will be the sum of the sizes of the fields inside. In your case size of op is 32 bits that..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom general can be more efficient it merely swaps pointers and sizes rather than allocating and copying entire arrays. Aside from..
What can I use to profile C++ code in Linux? http://stackoverflow.com/questions/375913/what-can-i-use-to-profile-c-code-in-linux You may have multiple performance problems of different sizes. If you clean out any one of them the remaining ones will take..
What is the bit size of long on 64-bit Windows? http://stackoverflow.com/questions/384502/what-is-the-bit-size-of-long-on-64-bit-windows Unix world there were a few possible arrangements for the sizes of integers and pointers for 64 bit platforms. The two mostly.. out in disbelief there are different systems for the sizes of the integer data types on 64 bit machines. Get used to it..
http://stackoverflow.com/questions/408670/stack-static-and-heap-in-c the allocation process by using buffers of preset sizes for all allocations. Stack variables are useful for when you..
Is `long` guaranteed to be at least 32 bits? http://stackoverflow.com/questions/4329777/is-long-guaranteed-to-be-at-least-32-bits of the C Standard I have always understood that the sizes of the integral fundamental types in C were as follows sizeof..
http://stackoverflow.com/questions/589575/size-of-int-long-etc find without much success reliable information stating the sizes of char short int long double float and other types I didn't..
Executing cv::warpPerspective for a fake deskewing on a set of cv::Point http://stackoverflow.com/questions/7838487/executing-cvwarpperspective-for-a-fake-deskewing-on-a-set-of-cvpoint the src and dst images in warpPerspective can be different sizes. Third a performance concern. While your method is absolutely..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops be of no relevance as the behavior severely depends on the sizes of the arrays n and the CPU cache. So if there is further interest.. like looping and branching. Region 2 Here as the data sizes increases the amount of relative overhead goes down and the..
What is the difference between char a[] = “string”; and char *p = “string”; http://stackoverflow.com/questions/9460260/what-is-the-difference-between-char-a-string-and-char-p-string location p fetch the pointer value there add three element sizes to the pointer and finally fetch the character pointed to. In..
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