[in] | uplo | Specifies whether the matrix A is upper triangular or lower triangular: = PlasmaUpper: Upper triangle of A is stored; = PlasmaLower: Lower triangle of A is stored. |
[in,out] | A | On entry, the N-by-N symmetric positive definite (or Hermitian) coefficient matrix A. If uplo = PlasmaUpper, the leading N-by-N upper triangular part of A contains the upper triangular part of the matrix A, and the strictly lower triangular part of A is not referenced. If UPLO = 'L', the leading N-by-N lower triangular part of A contains the lower triangular part of the matrix A, and the strictly upper triangular part of A is not referenced.
- If the iterative refinement converged, A is not modified;
- otherwise, it falled backed to double precision solution,
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[in] | B | On entry, the N-by-NRHS matrix of right hand side matrix B. |
[out] | X | On exit, if return value = 0, the N-by-NRHS solution matrix X. |
[out] | ITER | The number of the current iteration in the iterative refinement process |