LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_dgees.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_dgees (int matrix_order, char jobvs, char sort, LAPACK_D_SELECT2 select, lapack_int n, double *a, lapack_int lda, lapack_int *sdim, double *wr, double *wi, double *vs, lapack_int ldvs)

Function/Subroutine Documentation

lapack_int LAPACKE_dgees ( int  matrix_order,
char  jobvs,
char  sort,
LAPACK_D_SELECT2  select,
lapack_int  n,
double *  a,
lapack_int  lda,
lapack_int sdim,
double *  wr,
double *  wi,
double *  vs,
lapack_int  ldvs 
)

Definition at line 36 of file lapacke_dgees.c.

{
lapack_int info = 0;
lapack_int lwork = -1;
lapack_logical* bwork = NULL;
double* work = NULL;
double work_query;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dgees", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_dge_nancheck( matrix_order, n, n, a, lda ) ) {
return -6;
}
#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 ) {
goto exit_level_0;
}
}
/* Query optimal working array(s) size */
info = LAPACKE_dgees_work( matrix_order, jobvs, sort, select, n, a, lda,
sdim, wr, wi, vs, ldvs, &work_query, lwork,
bwork );
if( info != 0 ) {
goto exit_level_1;
}
lwork = (lapack_int)work_query;
/* Allocate memory for work arrays */
work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
if( work == NULL ) {
goto exit_level_1;
}
/* Call middle-level interface */
info = LAPACKE_dgees_work( matrix_order, jobvs, sort, select, n, a, lda,
sdim, wr, wi, vs, ldvs, work, lwork, bwork );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_1:
if( LAPACKE_lsame( sort, 's' ) ) {
LAPACKE_free( bwork );
}
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dgees", info );
}
return info;
}

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