lapacke_dgbrfsx.c

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* Contents: Native high-level C interface to LAPACK function dgbrfsx
* Author: Intel Corporation
* Generated November 2015
*****************************************************************************/

#include "lapacke_utils.h"

lapack_int LAPACKE_dgbrfsx( int matrix_layout, char trans, char equed,
                            lapack_int n, lapack_int kl, lapack_int ku,
                            lapack_int nrhs, const double* ab, lapack_int ldab,
                            const double* afb, lapack_int ldafb,
                            const lapack_int* ipiv, const double* r,
                            const double* c, const double* b, lapack_int ldb,
                            double* x, lapack_int ldx, double* rcond,
                            double* berr, lapack_int n_err_bnds,
                            double* err_bnds_norm, double* err_bnds_comp,
                            lapack_int nparams, double* params )
{
    lapack_int info = 0;
    lapack_int* iwork = NULL;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dgbrfsx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_dgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
        return -8;
    }
    if( LAPACKE_dgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb, ldafb ) ) {
        return -10;
    }
    if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
        return -15;
    }
    if( LAPACKE_lsame( equed, 'b' ) || LAPACKE_lsame( equed, 'c' ) ) {
        if( LAPACKE_d_nancheck( n, c, 1 ) ) {
            return -14;
        }
    }
    if( nparams>0 ) {
        if( LAPACKE_d_nancheck( nparams, params, 1 ) ) {
            return -25;
        }
    }
    if( LAPACKE_lsame( equed, 'b' ) || LAPACKE_lsame( equed, 'r' ) ) {
        if( LAPACKE_d_nancheck( n, r, 1 ) ) {
            return -13;
        }
    }
    if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
        return -17;
    }
#endif
    /* Allocate memory for working array(s) */
    iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
    if( iwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,4*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_dgbrfsx_work( matrix_layout, trans, equed, n, kl, ku, nrhs,
                                 ab, ldab, afb, ldafb, ipiv, r, c, b, ldb, x,
                                 ldx, rcond, berr, n_err_bnds, err_bnds_norm,
                                 err_bnds_comp, nparams, params, work, iwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_1:
    LAPACKE_free( iwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dgbrfsx", info );
    }
    return info;
}