LAPACK  3.10.0
LAPACK: Linear Algebra PACKage
lapacke_ztrevc_work.c
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function ztrevc
30 * Author: Intel Corporation
31 *****************************************************************************/
32 
33 #include "lapacke_utils.h"
34 
35 lapack_int LAPACKE_ztrevc_work( int matrix_layout, char side, char howmny,
36  const lapack_logical* select, lapack_int n,
40  lapack_int mm, lapack_int* m,
41  lapack_complex_double* work, double* rwork )
42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_ztrevc( &side, &howmny, select, &n, t, &ldt, vl, &ldvl, vr,
47  &ldvr, &mm, m, work, rwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldt_t = MAX(1,n);
53  lapack_int ldvl_t = MAX(1,n);
54  lapack_int ldvr_t = MAX(1,n);
55  lapack_complex_double* t_t = NULL;
56  lapack_complex_double* vl_t = NULL;
57  lapack_complex_double* vr_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldt < n ) {
60  info = -7;
61  LAPACKE_xerbla( "LAPACKE_ztrevc_work", info );
62  return info;
63  }
64  if( ldvl < mm ) {
65  info = -9;
66  LAPACKE_xerbla( "LAPACKE_ztrevc_work", info );
67  return info;
68  }
69  if( ldvr < mm ) {
70  info = -11;
71  LAPACKE_xerbla( "LAPACKE_ztrevc_work", info );
72  return info;
73  }
74  /* Allocate memory for temporary array(s) */
75  t_t = (lapack_complex_double*)
76  LAPACKE_malloc( sizeof(lapack_complex_double) * ldt_t * MAX(1,n) );
77  if( t_t == NULL ) {
79  goto exit_level_0;
80  }
81  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
82  vl_t = (lapack_complex_double*)
84  ldvl_t * MAX(1,mm) );
85  if( vl_t == NULL ) {
87  goto exit_level_1;
88  }
89  }
90  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
91  vr_t = (lapack_complex_double*)
93  ldvr_t * MAX(1,mm) );
94  if( vr_t == NULL ) {
96  goto exit_level_2;
97  }
98  }
99  /* Transpose input matrices */
100  LAPACKE_zge_trans( matrix_layout, n, n, t, ldt, t_t, ldt_t );
101  if( ( LAPACKE_lsame( side, 'l' ) || LAPACKE_lsame( side, 'b' ) ) &&
102  LAPACKE_lsame( howmny, 'b' ) ) {
103  LAPACKE_zge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
104  }
105  if( ( LAPACKE_lsame( side, 'r' ) || LAPACKE_lsame( side, 'b' ) ) &&
106  LAPACKE_lsame( howmny, 'b' ) ) {
107  LAPACKE_zge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
108  }
109  /* Call LAPACK function and adjust info */
110  LAPACK_ztrevc( &side, &howmny, select, &n, t_t, &ldt_t, vl_t, &ldvl_t,
111  vr_t, &ldvr_t, &mm, m, work, rwork, &info );
112  if( info < 0 ) {
113  info = info - 1;
114  }
115  /* Transpose output matrices */
116  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, t_t, ldt_t, t, ldt );
117  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
118  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
119  ldvl );
120  }
121  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
122  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
123  ldvr );
124  }
125  /* Release memory and exit */
126  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
127  LAPACKE_free( vr_t );
128  }
129 exit_level_2:
130  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
131  LAPACKE_free( vl_t );
132  }
133 exit_level_1:
134  LAPACKE_free( t_t );
135 exit_level_0:
136  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
137  LAPACKE_xerbla( "LAPACKE_ztrevc_work", info );
138  }
139  } else {
140  info = -1;
141  LAPACKE_xerbla( "LAPACKE_ztrevc_work", info );
142  }
143  return info;
144 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_double
Definition: lapack.h:63
#define LAPACK_ztrevc(...)
Definition: lapack.h:21484
#define lapack_logical
Definition: lapack.h:87
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_int LAPACKE_ztrevc_work(int matrix_layout, char side, char howmny, const lapack_logical *select, lapack_int n, lapack_complex_double *t, lapack_int ldt, lapack_complex_double *vl, lapack_int ldvl, lapack_complex_double *vr, lapack_int ldvr, lapack_int mm, lapack_int *m, lapack_complex_double *work, double *rwork)