WARN: It's not thread safe to call it concurrently with `local()`.

Prewait prepares for waiting. After calling Prewait, the thread must re-check the wait predicate and then call either CancelWait or CommitWait.

binding placeholder accessors to a command group handler for SYCL

\returns the number of rows grouped by blocks */

Returns true if the trials have been completed, else false

\returns the number of columns. \sa rows() */

Verifies total deflation is **not** triggered.

* return the number of evaluation of functor */

\brief Returns the maximum number of iterations. */

Must be call first when calling Eigen from multiple threads */

inline Scalar *valuePtr(){ return m_values; }

\returns the inverse of the matrix of which *this is the LU decomposition. * * \note If this matrix is not invertible, the returned matrix