PLASMA 2.8.0 PLASMA - Parallel Linear Algebra for Scalable Multi-core Architectures

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void CORE_dswap | ( | int | m,
|  | int | n,
|  | double * | Q,
|  | int | ldq,
|  | const double * | work,
|  | const int * | perm,
|  | int | start,
|  | int | end
| ) |  |

CORE_dswap - Extract the eigenvectors in the range [start,end-1] from work and copy them in order into the Q matrix thanks to the given permutation.

Parameters

  [in] | m | m specifies the number of entries in each eigenvector, i.e. the number of rows of the matrices Q and Work.
  [in] | n | n specifies the number of eigenvectors to copy from work to Q, i.e. the number of columns of the matrices W and work.
  [out] | Q | On entry, matrix of size LDQ -by- n. On exit, Q will contain the n sorted eigenvectors.
  [in] | ldq | ldq specifies the leading dimension of Q. ldq >= max(1,m)
  [in] | work | On entry work contains the non-sorted eigenvectors and is of dimension m-by-n.
  [in] | perm | The permutation array used to copy work into Q. On entry, the i-th eigenvector is stored in the column perm[i] of work, and is copied to the i-th column of Q.
  [in] | start | start specifies the first column index to be considered by this kernel.
  [in] | end | end specifies the last column index to be considered by this kernel