lapacke_ztrsna.c

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* Contents: Native high-level C interface to LAPACK function ztrsna
* Author: Intel Corporation
* Generated October, 2010
*****************************************************************************/

#include "lapacke.h"
#include "lapacke_utils.h"

lapack_int LAPACKE_ztrsna( int matrix_order, char job, char howmny,
                           const lapack_logical* select, lapack_int n,
                           const lapack_complex_double* t, lapack_int ldt,
                           const lapack_complex_double* vl, lapack_int ldvl,
                           const lapack_complex_double* vr, lapack_int ldvr,
                           double* s, double* sep, lapack_int mm,
                           lapack_int* m )
{
    lapack_int info = 0;
    lapack_int ldwork =  LAPACKE_lsame( job, 'e' ) ? 1 : MAX(1,n) ;
    double* rwork = NULL;
    lapack_complex_double* work = NULL;
    if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_ztrsna", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_zge_nancheck( matrix_order, n, n, t, ldt ) ) {
        return -6;
    }
    if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
        if( LAPACKE_zge_nancheck( matrix_order, n, mm, vl, ldvl ) ) {
            return -8;
        }
    }
    if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
        if( LAPACKE_zge_nancheck( matrix_order, n, mm, vr, ldvr ) ) {
            return -10;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
        rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
        if( rwork == NULL ) {
            info = LAPACK_WORK_MEMORY_ERROR;
            goto exit_level_0;
        }
    }
    if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
        work = (lapack_complex_double*)
            LAPACKE_malloc( sizeof(lapack_complex_double) *
                            ldwork * MAX(1,n+6) );
        if( work == NULL ) {
            info = LAPACK_WORK_MEMORY_ERROR;
            goto exit_level_1;
        }
    }
    /* Call middle-level interface */
    info = LAPACKE_ztrsna_work( matrix_order, job, howmny, select, n, t, ldt,
                                vl, ldvl, vr, ldvr, s, sep, mm, m, work, ldwork,
                                rwork );
    /* Release memory and exit */
    if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
        LAPACKE_free( work );
    }
exit_level_1:
    if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
        LAPACKE_free( rwork );
    }
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_ztrsna", info );
    }
    return info;
}