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c++ Programming Glossary: z2Efficient C++ quaternion multiplication using cv::Mat http://stackoverflow.com/questions/10781033/efficient-c-quaternion-multiplication-using-cvmat 2 const float r1 q1.at float 3 Second quaternion q2 x2 y2 z2 r2 const float x2 q2.at float 0 const float y2 q2.at float 1.. x2 q2.at float 0 const float y2 q2.at float 1 const float z2 q2.at float 2 const float r2 q2.at float 3 q.at float 0 x1 r2.. 2 const float r2 q2.at float 3 q.at float 0 x1 r2 r1 x2 y1 z2 z1 y2 x component q.at float 1 r1 y2 x1 z2 y1 r2 z1 x2 y component..
Fast bignum square computation http://stackoverflow.com/questions/18465326/fast-bignum-square-computation z n x n2 y n2 n2 z0 x0.y0 _mul_karatsuba z x y n2 z2 x1.y1 DWORD q new DWORD n 1 q0 q1 qq BYTE cx cy if q NULL _error.. q0 qq q1 z n i n 1 _sub z0 qq q n q0 qq q1 z i n 1 _sub z2 qq z n2 q0 qq q1 q n i n 1 _add z1 x0 x1 y0 y1 z0 z2 for i.. z2 qq z n2 q0 qq q1 q n i n 1 _add z1 x0 x1 y0 y1 z0 z2 for i n2 1 i 0 i if alu.cy alu.inc z i else break delete q #undef..
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