LAPACK  3.10.1
LAPACK: Linear Algebra PACKage
lapacke_dhsein_work.c
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function dhsein
30 * Author: Intel Corporation
31 *****************************************************************************/
32 
33 #include "lapacke_utils.h"
34 
35 lapack_int LAPACKE_dhsein_work( int matrix_layout, char job, char eigsrc,
36  char initv, lapack_logical* select,
37  lapack_int n, const double* h, lapack_int ldh,
38  double* wr, const double* wi, double* vl,
39  lapack_int ldvl, double* vr, lapack_int ldvr,
40  lapack_int mm, lapack_int* m, double* work,
41  lapack_int* ifaill, lapack_int* ifailr )
42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_dhsein( &job, &eigsrc, &initv, select, &n, h, &ldh, wr, wi, vl,
47  &ldvl, vr, &ldvr, &mm, m, work, ifaill, ifailr, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldh_t = MAX(1,n);
53  lapack_int ldvl_t = MAX(1,n);
54  lapack_int ldvr_t = MAX(1,n);
55  double* h_t = NULL;
56  double* vl_t = NULL;
57  double* vr_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldh < n ) {
60  info = -8;
61  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
62  return info;
63  }
64  if( ldvl < mm ) {
65  info = -12;
66  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
67  return info;
68  }
69  if( ldvr < mm ) {
70  info = -14;
71  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
72  return info;
73  }
74  /* Allocate memory for temporary array(s) */
75  h_t = (double*)LAPACKE_malloc( sizeof(double) * ldh_t * MAX(1,n) );
76  if( h_t == NULL ) {
78  goto exit_level_0;
79  }
80  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'l' ) ) {
81  vl_t = (double*)
82  LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,mm) );
83  if( vl_t == NULL ) {
85  goto exit_level_1;
86  }
87  }
88  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'r' ) ) {
89  vr_t = (double*)
90  LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,mm) );
91  if( vr_t == NULL ) {
93  goto exit_level_2;
94  }
95  }
96  /* Transpose input matrices */
97  LAPACKE_dge_trans( matrix_layout, n, n, h, ldh, h_t, ldh_t );
98  if( ( LAPACKE_lsame( job, 'l' ) || LAPACKE_lsame( job, 'b' ) ) &&
99  LAPACKE_lsame( initv, 'v' ) ) {
100  LAPACKE_dge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
101  }
102  if( ( LAPACKE_lsame( job, 'r' ) || LAPACKE_lsame( job, 'b' ) ) &&
103  LAPACKE_lsame( initv, 'v' ) ) {
104  LAPACKE_dge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
105  }
106  /* Call LAPACK function and adjust info */
107  LAPACK_dhsein( &job, &eigsrc, &initv, select, &n, h_t, &ldh_t, wr, wi,
108  vl_t, &ldvl_t, vr_t, &ldvr_t, &mm, m, work, ifaill,
109  ifailr, &info );
110  if( info < 0 ) {
111  info = info - 1;
112  }
113  /* Transpose output matrices */
114  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'l' ) ) {
115  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
116  ldvl );
117  }
118  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'r' ) ) {
119  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
120  ldvr );
121  }
122  /* Release memory and exit */
123  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'r' ) ) {
124  LAPACKE_free( vr_t );
125  }
126 exit_level_2:
127  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'l' ) ) {
128  LAPACKE_free( vl_t );
129  }
130 exit_level_1:
131  LAPACKE_free( h_t );
132 exit_level_0:
133  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
134  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
135  }
136  } else {
137  info = -1;
138  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
139  }
140  return info;
141 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_dhsein(...)
Definition: lapack.h:9071
#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_int LAPACKE_dhsein_work(int matrix_layout, char job, char eigsrc, char initv, lapack_logical *select, lapack_int n, const double *h, lapack_int ldh, double *wr, const double *wi, double *vl, lapack_int ldvl, double *vr, lapack_int ldvr, lapack_int mm, lapack_int *m, double *work, lapack_int *ifaill, lapack_int *ifailr)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)