lapacke_dpbsvx.c

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* Contents: Native high-level C interface to LAPACK function dpbsvx
* Author: Intel Corporation
* Generated November 2015
*****************************************************************************/
 
#include "lapacke_utils.h"
 
lapack_int LAPACKE_dpbsvx( int matrix_layout, char fact, char uplo, lapack_int n,
                           lapack_int kd, lapack_int nrhs, double* ab,
                           lapack_int ldab, double* afb, lapack_int ldafb,
                           char* equed, double* s, double* b, lapack_int ldb,
                           double* x, lapack_int ldx, double* rcond,
                           double* ferr, double* berr )
{
    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_dpbsvx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_dpb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
            return -7;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_dpb_nancheck( matrix_layout, uplo, n, kd, afb, ldafb ) ) {
                return -9;
            }
        }
        if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
            return -13;
        }
        if( LAPACKE_lsame( fact, 'f' ) && LAPACKE_lsame( *equed, 'y' ) ) {
            if( LAPACKE_d_nancheck( n, s, 1 ) ) {
                return -12;
            }
        }
    }
#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(1,3*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_dpbsvx_work( matrix_layout, fact, uplo, n, kd, nrhs, ab, ldab,
                                afb, ldafb, equed, s, b, ldb, x, ldx, rcond,
                                ferr, berr, 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_dpbsvx", info );
    }
    return info;
}