dcg_check
dcg_check
Checks consistency and correctness of the user defined data.
Syntax
void
dcg_check
(
const
MKL_INT
*n
,
const
double
*x
,
const
double
*b
,
MKL_INT
*RCI_request
,
MKL_INT
*ipar
,
double
*dpar
,
double
*tmp
);
Include Files
- mkl.h
Description
The routine
dcg_check
checks consistency and correctness of the parameters to be passed to the solver routine dcg
. However this operation does not guarantee that the solver returns the correct result. It only reduces the chance of making a mistake in the parameters of the method. Skip this operation only if you are sure that the correct data is specified in the solver parameters.The lengths of all vectors must be defined in a previous call to the
dcg_init
routine.If none of the stopping criteria () has been enabled, both will be set to 1.
ipar
[7]-ipar
[9]ipar
[7] and ipar
[8]Input Parameters
- ipar
- Array of size 128. Refer to the FGMRES Common Parameters.
- n
- Sets the size of the problem.
- x
- Array of sizen. Contains the initial approximation to the solution vector. Normally it is equal to 0 or tob.
- b
- Array of sizen. Contains the right-hand side vector.
Output Parameters
- RCI_request
- Gives information about result of the routine.
- ipar
- dpar
- Array of size128. Refer to the CG Common Parameters.
- tmp
- Array of size(. Refer to the CG Common Parameters.n*4)
Return Values
- RCI_request= 0
- Indicates that the task completed normally.
- RCI_request= -1100
- Indicates that the task is interrupted and the errors occur.
- RCI_request= -1001
- Indicates that there are some warning messages.
- RCI_request= -1010
- Indicates that the routine changed some parameters to make them consistent or correct.
- RCI_request= -1011
- Indicates that there are some warning messages and that the routine changed some parameters.