LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
 All Classes Files Functions Variables Typedefs Macros
lapacke_dhgeqz_work.c File Reference
#include "lapacke_utils.h"
Include dependency graph for lapacke_dhgeqz_work.c:

Go to the source code of this file.

Functions/Subroutines

lapack_int LAPACKE_dhgeqz_work (int matrix_order, char job, char compq, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, double *h, lapack_int ldh, double *t, lapack_int ldt, double *alphar, double *alphai, double *beta, double *q, lapack_int ldq, double *z, lapack_int ldz, double *work, lapack_int lwork)

Function/Subroutine Documentation

lapack_int LAPACKE_dhgeqz_work ( int  matrix_order,
char  job,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
double *  h,
lapack_int  ldh,
double *  t,
lapack_int  ldt,
double *  alphar,
double *  alphai,
double *  beta,
double *  q,
lapack_int  ldq,
double *  z,
lapack_int  ldz,
double *  work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_dhgeqz_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dhgeqz( &job, &compq, &compz, &n, &ilo, &ihi, h, &ldh, t, &ldt,
alphar, alphai, beta, q, &ldq, z, &ldz, work, &lwork,
&info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldh_t = MAX(1,n);
lapack_int ldq_t = MAX(1,n);
lapack_int ldt_t = MAX(1,n);
lapack_int ldz_t = MAX(1,n);
double* h_t = NULL;
double* t_t = NULL;
double* q_t = NULL;
double* z_t = NULL;
/* Check leading dimension(s) */
if( ldh < n ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_dhgeqz_work", info );
return info;
}
if( ldq < n ) {
info = -16;
LAPACKE_xerbla( "LAPACKE_dhgeqz_work", info );
return info;
}
if( ldt < n ) {
info = -11;
LAPACKE_xerbla( "LAPACKE_dhgeqz_work", info );
return info;
}
if( ldz < n ) {
info = -18;
LAPACKE_xerbla( "LAPACKE_dhgeqz_work", info );
return info;
}
/* Query optimal working array(s) size if requested */
if( lwork == -1 ) {
LAPACK_dhgeqz( &job, &compq, &compz, &n, &ilo, &ihi, h, &ldh_t, t,
&ldt_t, alphar, alphai, beta, q, &ldq_t, z, &ldz_t,
work, &lwork, &info );
return (info < 0) ? (info - 1) : info;
}
/* Allocate memory for temporary array(s) */
h_t = (double*)LAPACKE_malloc( sizeof(double) * ldh_t * MAX(1,n) );
if( h_t == NULL ) {
goto exit_level_0;
}
t_t = (double*)LAPACKE_malloc( sizeof(double) * ldt_t * MAX(1,n) );
if( t_t == NULL ) {
goto exit_level_1;
}
if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
if( q_t == NULL ) {
goto exit_level_2;
}
}
if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
if( z_t == NULL ) {
goto exit_level_3;
}
}
/* Transpose input matrices */
LAPACKE_dge_trans( matrix_order, n, n, h, ldh, h_t, ldh_t );
LAPACKE_dge_trans( matrix_order, n, n, t, ldt, t_t, ldt_t );
if( LAPACKE_lsame( compq, 'v' ) ) {
LAPACKE_dge_trans( matrix_order, n, n, q, ldq, q_t, ldq_t );
}
if( LAPACKE_lsame( compz, 'v' ) ) {
LAPACKE_dge_trans( matrix_order, n, n, z, ldz, z_t, ldz_t );
}
/* Call LAPACK function and adjust info */
LAPACK_dhgeqz( &job, &compq, &compz, &n, &ilo, &ihi, h_t, &ldh_t, t_t,
&ldt_t, alphar, alphai, beta, q_t, &ldq_t, z_t, &ldz_t,
work, &lwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, h_t, ldh_t, h, ldh );
LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, t_t, ldt_t, t, ldt );
if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
}
if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
}
/* Release memory and exit */
if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
LAPACKE_free( z_t );
}
exit_level_3:
if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
LAPACKE_free( q_t );
}
exit_level_2:
LAPACKE_free( t_t );
exit_level_1:
LAPACKE_free( h_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_dhgeqz_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dhgeqz_work", info );
}
return info;
}

Here is the call graph for this function:

Here is the caller graph for this function: