PLASMA
2.8.0
PLASMA - Parallel Linear Algebra for Scalable Multi-core Architectures
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void CORE_slaed2_copydef | ( | int | n, |
int | n1, | ||
int | K, | ||
const int * | ctot, | ||
float * | Q, | ||
int | LDQ, | ||
const float * | Q2, | ||
int | start, | ||
int | end | ||
) |
CORE_slaed2_copydef - Copy back a portion of the deflated eigenvectors from Q2 to Q.
[in] | n | n specifies the dimension of the symmetric tridiagonal matrix |
[in] | n1 | n1 specifies the location of the last eigenvalue of the first subproblem min(1, n) <= n1 <= n/2 |
[in] | K | K specifies the number of non-deflated eigenvalues |
[in] | start | start specifies the first column index to be considered by this kernel note that this index can be < K, it is supported |
[in] | end | end specifies the last column index to be considered by this kernel |
[in] | ctot | ctot[i] is the number of columns of type i, as defined with INDX. 0- number of colums with non-zero in the upper half only 1- number of dense colums 2- number of colums with non-zero in the lower half only 3- number of deflated columns |
[out] | Q | On exit, Q(start:end-1) contains the updated eigenvectors |
[in] | LDQ | LDQ specifies the leading direction of Q |
[in] | Q2 | On entry, Q2 contains the saved eigenvectors in the compressed form. |