Functions | |
template<typename T1 > | |
bool | svd (Col< typename T1::pod_type > &S, const Base< typename T1::elem_type, T1 > &X, const typename arma_blas_type_only< typename T1::elem_type >::result *junk=0) |
template<typename T1 > | |
Col< typename T1::pod_type > | svd (const Base< typename T1::elem_type, T1 > &X, const typename arma_blas_type_only< typename T1::elem_type >::result *junk=0) |
template<typename T1 > | |
bool | svd (Mat< typename T1::elem_type > &U, Col< typename T1::pod_type > &S, Mat< typename T1::elem_type > &V, const Base< typename T1::elem_type, T1 > &X, const typename arma_blas_type_only< typename T1::elem_type >::result *junk=0) |
bool svd | ( | Col< typename T1::pod_type > & | S, | |
const Base< typename T1::elem_type, T1 > & | X, | |||
const typename arma_blas_type_only< typename T1::elem_type >::result * | junk = 0 | |||
) | [inline] |
Definition at line 26 of file fn_svd.hpp.
References arma_print(), Base< elem_type, derived >::get_ref(), and auxlib::svd().
Referenced by op_pinv::direct_pinv(), op_princomp::direct_princomp(), op_princomp_cov::direct_princomp_cov(), and svd().
00031 { 00032 arma_extra_debug_sigprint(); 00033 00034 typedef typename T1::elem_type eT; 00035 00036 // unwrap_check not used as T1::elem_type and T1::pod_type may not be the same. 00037 // furthermore, it doesn't matter if A is an alias of S, as auxlib::svd() makes a copy of A 00038 00039 const unwrap<T1> tmp(X.get_ref()); 00040 const Mat<eT>& A = tmp.M; 00041 00042 const bool status = auxlib::svd(S, A); 00043 00044 if(status == false) 00045 { 00046 arma_print("svd(): singular value decomposition failed"); 00047 } 00048 00049 return status; 00050 }
Col<typename T1::pod_type> svd | ( | const Base< typename T1::elem_type, T1 > & | X, | |
const typename arma_blas_type_only< typename T1::elem_type >::result * | junk = 0 | |||
) | [inline] |
Definition at line 58 of file fn_svd.hpp.
References Col< eT >::set_size(), and svd().
00062 { 00063 arma_extra_debug_sigprint(); 00064 00065 Col<typename T1::pod_type> out; 00066 00067 const bool status = svd(out, X); 00068 00069 if(status == false) 00070 { 00071 out.set_size(0); 00072 } 00073 00074 return out; 00075 }
bool svd | ( | Mat< typename T1::elem_type > & | U, | |
Col< typename T1::pod_type > & | S, | |||
Mat< typename T1::elem_type > & | V, | |||
const Base< typename T1::elem_type, T1 > & | X, | |||
const typename arma_blas_type_only< typename T1::elem_type >::result * | junk = 0 | |||
) | [inline] |
Definition at line 83 of file fn_svd.hpp.
References arma_print(), Base< elem_type, derived >::get_ref(), and auxlib::svd().
00090 { 00091 arma_extra_debug_sigprint(); 00092 00093 typedef typename T1::elem_type eT; 00094 00095 arma_debug_check( ( ((void*)(&U) == (void*)(&S)) || (&U == &V) || ((void*)(&S) == (void*)(&V)) ), "svd(): two or more output objects are the same object" ); 00096 00097 const unwrap<T1> tmp(X.get_ref()); 00098 const Mat<eT>& A = tmp.M; 00099 00100 // auxlib::svd() makes an internal copy of A 00101 const bool status = auxlib::svd(U, S, V, A); 00102 00103 if(status == false) 00104 { 00105 arma_print("svd(): singular value decomposition failed"); 00106 } 00107 00108 return status; 00109 }