c++ Programming Glossary: stride

http://stackoverflow.com/questions/1102692/how-to-do-alpha-blend-fast

top y bottom y BYTE resultByte GET_BYTE resultBits left y stride bytepp BYTE srcByte GET_BYTE srcBits left y stride bytepp BYTE.. left y stride bytepp BYTE srcByte GET_BYTE srcBits left y stride bytepp BYTE srcByteTop GET_BYTE srcBitsTop left y stride bytepp.. y stride bytepp BYTE srcByteTop GET_BYTE srcBitsTop left y stride bytepp BYTE maskCurrent GET_GREY maskSrc left y width int alpha..

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

are for this example 0x800 apart. This is the critical stride again for this example . The critical stride can also be calculated.. the critical stride again for this example . The critical stride can also be calculated criticaStride numberOfSets lineSize Variables.. 8 of the elements in the matrix 64 bit int . The critical stride would be 2048 bytes which correspond to 4 rows of the matrix..

Get the first column of a matrix represented by a vector of vectors

http://stackoverflow.com/questions/15778377/get-the-first-column-of-a-matrix-represented-by-a-vector-of-vectors

private vector T StridedSlice int start int length int stride const int m_rows int m_cols vector T m_data This class is basically.. T SimpleMatrix T StridedSlice int start int length int stride const vector T result result.reserve length const T pos m_data.. start for int i 0 i length i result.push_back pos pos stride return result And the rest is pretty straight forward template..

GetDIBits and loop through pixels using X, Y

http://stackoverflow.com/questions/3688409/getdibits-and-loop-through-pixels-using-x-y

MyBMInfo.bmiHeader requesting a 32 bit image means that no stride padding will be necessary although it always contains an possibly..

How did this person code “Hello World” with Microsoft Paint?

http://stackoverflow.com/questions/5588649/how-did-this-person-code-hello-world-with-microsoft-paint

per pixel stored in reverse row order and with 4 bytes row stride . The bytes for color data are used to represent colors i.e... are used really rarely anyway . With the exception of the stride that was avoided using rows multiple of 4 bytes. share improve..

C++ ~ 1M look-ups in unordered_map with string key works much slower than .NET code

http://stackoverflow.com/questions/8372579/c-1m-look-ups-in-unordered-map-with-string-key-works-much-slower-than-net-c

stops using every character for the hash and has a stride greater than 1 . size_t operator const _Kty _Keyval const hash..

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

for false aliasing to occur there must be a large enough stride between the datasets. This is why you don't see this in region..