dcgmrhs_check

Checks consistency and correctness of the user defined data.

Syntax

void dcgmrhs_check (const MKL_INT *n , const double *x , const MKL_INT *nrhs , const double *b , MKL_INT *RCI_request , MKL_INT *ipar , double *dpar , double *tmp );

Include Files

  • mkl.h

Description

The routine dcgmrhs_check checks the consistency and correctness of the parameters to be passed to the solver routine dcgmrhs. While this operation reduces the chance of making a mistake in the parameters, it does not guarantee that the solver returns the correct result.

If you are sure that the correct data is specified in the solver parameters, you can skip this operation.

The lengths of all vectors must be defined in a previous call to the dcgmrhs_init routine.

Input Parameters

n

Sets the size of the problem.

x

Array of size n*nrhs. Contains the initial approximation to the solution vectors. Normally it is equal to 0 or to b.

nrhs

This parameter sets the number of right-hand sides.

b

Array of size n*nrhs. Contains the right-hand side vectors.

Output Parameters

RCI_request

Returns information about the results of the routine.

ipar

Array of size (128+2*nrhs). Refer to the CG Common Parameters.

dpar

Array of size (128+2*nrhs). Refer to the CG Common Parameters.

tmp

Array of size (n*(3+nrhs)). Refer to the CG Common Parameters.

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.

For more complete information about compiler optimizations, see our Optimization Notice.
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