lapacke_sgeesx.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_sgeesx (int matrix_layout, char jobvs, char sort, LAPACK_S_SELECT2 select, char sense, lapack_int n, float *a, lapack_int lda, lapack_int *sdim, float *wr, float *wi, float *vs, lapack_int ldvs, float *rconde, float *rcondv)

Function Documentation

LAPACKE_sgeesx()

lapack_int LAPACKE_sgeesx	(	int	matrix_layout,
		char	jobvs,
		char	sort,
		LAPACK_S_SELECT2	select,
		char	sense,
		lapack_int	n,
		float *	a,
		lapack_int	lda,
		lapack_int *	sdim,
		float *	wr,
		float *	wi,
		float *	vs,
		lapack_int	ldvs,
		float *	rconde,
		float *	rcondv )

Definition at line 35 of file lapacke_sgeesx.c.

{
    lapack_int info = 0;
    lapack_int liwork = -1;
    lapack_int lwork = -1;
    lapack_logical* bwork = NULL;
    lapack_int* iwork = NULL;
    float* work = NULL;
    lapack_int iwork_query;
    float work_query;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_sgeesx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_sge_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;
        }
    }
    /* Query optimal working array(s) size */
    info = LAPACKE_sgeesx_work( matrix_layout, jobvs, sort, select, sense, n, a,
                                lda, sdim, wr, wi, vs, ldvs, rconde, rcondv,
                                &work_query, lwork, &iwork_query, liwork,
                                bwork );
    if( info != 0 ) {
        goto exit_level_1;
    }
    liwork = iwork_query;
    lwork = (lapack_int)work_query;
    /* Allocate memory for work arrays */
    if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'v' ) ) {
        iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
        if( iwork == NULL ) {
            info = LAPACK_WORK_MEMORY_ERROR;
            goto exit_level_1;
        }
    }
    work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_2;
    }
    /* Call middle-level interface */
    info = LAPACKE_sgeesx_work( matrix_layout, jobvs, sort, select, sense, n, a,
                                lda, sdim, wr, wi, vs, ldvs, rconde, rcondv,
                                work, lwork, iwork, liwork, bwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_2:
    if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'v' ) ) {
        LAPACKE_free( iwork );
    }
exit_level_1:
    if( LAPACKE_lsame( sort, 's' ) ) {
        LAPACKE_free( bwork );
    }
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_sgeesx", info );
    }
    return info;
}