lapacke_zhsein.c

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

#include "lapacke_utils.h"

lapack_int LAPACKE_zhsein( int matrix_layout, char job, char eigsrc, char initv,
                           const lapack_logical* select, lapack_int n,
                           const lapack_complex_double* h, lapack_int ldh,
                           lapack_complex_double* w, lapack_complex_double* vl,
                           lapack_int ldvl, lapack_complex_double* vr,
                           lapack_int ldvr, lapack_int mm, lapack_int* m,
                           lapack_int* ifaill, lapack_int* ifailr )
{
    lapack_int info = 0;
    double* rwork = NULL;
    lapack_complex_double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_zhsein", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_zge_nancheck( matrix_layout, n, n, h, ldh ) ) {
        return -7;
    }
    if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'l' ) ) {
        if( LAPACKE_zge_nancheck( matrix_layout, n, mm, vl, ldvl ) ) {
            return -10;
        }
    }
    if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'r' ) ) {
        if( LAPACKE_zge_nancheck( matrix_layout, n, mm, vr, ldvr ) ) {
            return -12;
        }
    }
    if( LAPACKE_z_nancheck( n, w, 1 ) ) {
        return -9;
    }
#endif
    /* Allocate memory for working array(s) */
    rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (lapack_complex_double*)
        LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,n) * MAX(1,n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_zhsein_work( matrix_layout, job, eigsrc, initv, select, n, h,
                                ldh, w, vl, ldvl, vr, ldvr, mm, m, work, rwork,
                                ifaill, ifailr );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_1:
    LAPACKE_free( rwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_zhsein", info );
    }
    return info;
}