lapacke_dsbgst.c

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

#include "lapacke_utils.h"

lapack_int LAPACKE_dsbgst( int matrix_layout, char vect, char uplo, lapack_int n,
                           lapack_int ka, lapack_int kb, double* ab,
                           lapack_int ldab, const double* bb, lapack_int ldbb,
                           double* x, lapack_int ldx )
{
    lapack_int info = 0;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dsbgst", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_dsb_nancheck( matrix_layout, uplo, n, ka, ab, ldab ) ) {
        return -7;
    }
    if( LAPACKE_dsb_nancheck( matrix_layout, uplo, n, kb, bb, ldbb ) ) {
        return -9;
    }
#endif
    /* Allocate memory for working array(s) */
    work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_dsbgst_work( matrix_layout, vect, uplo, n, ka, kb, ab, ldab,
                                bb, ldbb, x, ldx, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dsbgst", info );
    }
    return info;
}