[in,out] | A | On entry, the N-by-N coefficient matrix A.
- If the iterative refinement converged, A is not modified;
- otherwise, it fell back to double precision solution, and then A contains the tile L and U factors from the factorization (not equivalent to LAPACK).
|
[out] | IPIV | On exit, the pivot indices that define the permutations (not equivalent to LAPACK). |
[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 |