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

lapack_int LAPACKE_dgees_work (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, double *work, lapack_int lwork, lapack_logical *bwork)

Function/Subroutine Documentation

lapack_int LAPACKE_dgees_work ( 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,
double *  work,
lapack_int  lwork,
lapack_logical bwork 
)

Definition at line 36 of file lapacke_dgees_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dgees( &jobvs, &sort, select, &n, a, &lda, sdim, wr, wi, vs,
&ldvs, work, &lwork, bwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,n);
lapack_int ldvs_t = MAX(1,n);
double* a_t = NULL;
double* vs_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -7;
LAPACKE_xerbla( "LAPACKE_dgees_work", info );
return info;
}
if( ldvs < n ) {
info = -12;
LAPACKE_xerbla( "LAPACKE_dgees_work", info );
return info;
}
/* Query optimal working array(s) size if requested */
if( lwork == -1 ) {
LAPACK_dgees( &jobvs, &sort, select, &n, a, &lda_t, sdim, wr, wi,
vs, &ldvs_t, work, &lwork, bwork, &info );
return (info < 0) ? (info - 1) : info;
}
/* Allocate memory for temporary array(s) */
a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
if( a_t == NULL ) {
goto exit_level_0;
}
if( LAPACKE_lsame( jobvs, 'v' ) ) {
vs_t = (double*)
LAPACKE_malloc( sizeof(double) * ldvs_t * MAX(1,n) );
if( vs_t == NULL ) {
goto exit_level_1;
}
}
/* Transpose input matrices */
LAPACKE_dge_trans( matrix_order, n, n, a, lda, a_t, lda_t );
/* Call LAPACK function and adjust info */
LAPACK_dgees( &jobvs, &sort, select, &n, a_t, &lda_t, sdim, wr, wi,
vs_t, &ldvs_t, work, &lwork, bwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
if( LAPACKE_lsame( jobvs, 'v' ) ) {
LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vs_t, ldvs_t, vs, ldvs );
}
/* Release memory and exit */
if( LAPACKE_lsame( jobvs, 'v' ) ) {
LAPACKE_free( vs_t );
}
exit_level_1:
LAPACKE_free( a_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_dgees_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dgees_work", info );
}
return info;
}

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