lapacke_zgeesx.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_zgeesx (int matrix_layout, char jobvs, char sort, LAPACK_Z_SELECT1 select, char sense, lapack_int n, lapack_complex_double *a, lapack_int lda, lapack_int *sdim, lapack_complex_double *w, lapack_complex_double *vs, lapack_int ldvs, double *rconde, double *rcondv)

Function Documentation

LAPACKE_zgeesx()

lapack_int LAPACKE_zgeesx	(	int	matrix_layout,
		char	jobvs,
		char	sort,
		LAPACK_Z_SELECT1	select,
		char	sense,
		lapack_int	n,
		lapack_complex_double *	a,
		lapack_int	lda,
		lapack_int *	sdim,
		lapack_complex_double *	w,
		lapack_complex_double *	vs,
		lapack_int	ldvs,
		double *	rconde,
		double *	rcondv )

Definition at line 35 of file lapacke_zgeesx.c.

{
    lapack_int info = 0;
    lapack_int lwork = -1;
    lapack_logical* bwork = NULL;
    double* rwork = NULL;
    lapack_complex_double* work = NULL;
    lapack_complex_double work_query;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_zgeesx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
            return -7;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    if( LAPACKE_lsame( sort, 's' ) ) {
        bwork = (lapack_logical*)
            LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
        if( bwork == NULL ) {
            info = LAPACK_WORK_MEMORY_ERROR;
            goto exit_level_0;
        }
    }
    rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Query optimal working array(s) size */
    info = LAPACKE_zgeesx_work( matrix_layout, jobvs, sort, select, sense, n, a,
                                lda, sdim, w, vs, ldvs, rconde, rcondv,
                                &work_query, lwork, rwork, bwork );
    if( info != 0 ) {
        goto exit_level_2;
    }
    lwork = LAPACK_Z2INT( work_query );
    /* Allocate memory for work arrays */
    work = (lapack_complex_double*)
        LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_2;
    }
    /* Call middle-level interface */
    info = LAPACKE_zgeesx_work( matrix_layout, jobvs, sort, select, sense, n, a,
                                lda, sdim, w, vs, ldvs, rconde, rcondv, work,
                                lwork, rwork, bwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_2:
    LAPACKE_free( rwork );
exit_level_1:
    if( LAPACKE_lsame( sort, 's' ) ) {
        LAPACKE_free( bwork );
    }
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_zgeesx", info );
    }
    return info;
}