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# C / C++ / MFC

 Re: Vector Iterator Incompatible Chris Losinger29-Sep-14 10:20 Chris Losinger 29-Sep-14 10:20
 Re: Vector Iterator Incompatible mjackson1129-Sep-14 12:10 mjackson11 29-Sep-14 12:10
 Formview scroll problem john563229-Sep-14 2:45 john5632 29-Sep-14 2:45
 Socket Programming(UDP) A_Fa28-Sep-14 20:48 A_Fa 28-Sep-14 20:48
 Re: Socket Programming(UDP) Richard MacCutchan28-Sep-14 22:02 Richard MacCutchan 28-Sep-14 22:02
 Re: Socket Programming(UDP) A_Fa28-Sep-14 22:17 A_Fa 28-Sep-14 22:17
 Re: Socket Programming(UDP) Richard MacCutchan28-Sep-14 22:30 Richard MacCutchan 28-Sep-14 22:30
 matrix svd decomposition problem includeh1028-Sep-14 11:29 includeh10 28-Sep-14 11:29
 I downloaded several SVD c++ code, but they all have same error. by SVD theory, a matrix A(mxn) (m: rows, n: columns) can be decomposed as A(mxn) = U(mxm) * S(mxn) * V'(nxn) (U, S and V are matrices) U and V must be orthogonal matrices: U x U' = U' x U = E, V x V' = V' x V = E (E is identity matrix) Problem: if m > n, those codes generate U' x U = E (correct), but U' x U != E (error). they are all correct for V. Because all of codes have the same error, I think U should be this way even it is not satisfy SVD theory. Or all codes are wrong (sounds not reasonable.) How do you think about? maybe I have to download more C++ source codes to test? .
 Re: matrix svd decomposition problem Richard MacCutchan28-Sep-14 22:01 Richard MacCutchan 28-Sep-14 22:01
 Re: matrix svd decomposition problem CPallini28-Sep-14 22:01 CPallini 28-Sep-14 22:01
 Re: matrix svd decomposition problem includeh1029-Sep-14 4:17 includeh10 29-Sep-14 4:17
 Re: matrix svd decomposition problem CPallini29-Sep-14 5:17 CPallini 29-Sep-14 5:17
 Will casting / passing 16 bit int as double harm FFT processing? Vaclav_27-Sep-14 6:33 Vaclav_ 27-Sep-14 6:33
 Re: Will casting / passing 16 bit int as double harm FFT processing? Rick York27-Sep-14 8:02 Rick York 27-Sep-14 8:02
 Re: Will casting / passing 16 bit int as double harm FFT processing? Vaclav_27-Sep-14 9:05 Vaclav_ 27-Sep-14 9:05
 Re: Will casting / passing 16 bit int as double harm FFT processing? Richard MacCutchan27-Sep-14 22:07 Richard MacCutchan 27-Sep-14 22:07
 Re: Will casting / passing 16 bit int as double harm FFT processing? Vaclav_28-Sep-14 4:18 Vaclav_ 28-Sep-14 4:18
 Re: Will casting / passing 16 bit int as double harm FFT processing? Richard MacCutchan28-Sep-14 4:40 Richard MacCutchan 28-Sep-14 4:40
 Re: Will casting / passing 16 bit int as double harm FFT processing? Vaclav_28-Sep-14 6:10 Vaclav_ 28-Sep-14 6:10
 Re: Will casting / passing 16 bit int as double harm FFT processing? Richard MacCutchan28-Sep-14 6:41 Richard MacCutchan 28-Sep-14 6:41
 Re: Will casting / passing 16 bit int as double harm FFT processing? Vaclav_28-Sep-14 8:35 Vaclav_ 28-Sep-14 8:35
 Re: Will casting / passing 16 bit int as double harm FFT processing? Richard MacCutchan28-Sep-14 21:58 Richard MacCutchan 28-Sep-14 21:58
 Re: Will casting / passing 16 bit int as double harm FFT processing? Vaclav_29-Sep-14 4:06 Vaclav_ 29-Sep-14 4:06
 Re: Will casting / passing 16 bit int as double harm FFT processing? Richard MacCutchan29-Sep-14 5:27 Richard MacCutchan 29-Sep-14 5:27
 Re: Will casting / passing 16 bit int as double harm FFT processing? Albert Holguin29-Sep-14 9:36 Albert Holguin 29-Sep-14 9:36
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