LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dhsein_work()

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 
)

Definition at line 36 of file lapacke_dhsein_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_dhsein( &job, &eigsrc, &initv, select, &n, h, &ldh, wr, wi, vl,
48  &ldvl, vr, &ldvr, &mm, m, work, ifaill, ifailr, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int ldh_t = MAX(1,n);
54  lapack_int ldvl_t = MAX(1,n);
55  lapack_int ldvr_t = MAX(1,n);
56  double* h_t = NULL;
57  double* vl_t = NULL;
58  double* vr_t = NULL;
59  /* Check leading dimension(s) */
60  if( ldh < n ) {
61  info = -8;
62  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
63  return info;
64  }
65  if( ldvl < mm ) {
66  info = -12;
67  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
68  return info;
69  }
70  if( ldvr < mm ) {
71  info = -14;
72  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
73  return info;
74  }
75  /* Allocate memory for temporary array(s) */
76  h_t = (double*)LAPACKE_malloc( sizeof(double) * ldh_t * MAX(1,n) );
77  if( h_t == NULL ) {
79  goto exit_level_0;
80  }
81  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'l' ) ) {
82  vl_t = (double*)
83  LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,mm) );
84  if( vl_t == NULL ) {
86  goto exit_level_1;
87  }
88  }
89  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'r' ) ) {
90  vr_t = (double*)
91  LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,mm) );
92  if( vr_t == NULL ) {
94  goto exit_level_2;
95  }
96  }
97  /* Transpose input matrices */
98  LAPACKE_dge_trans( matrix_layout, n, n, h, ldh, h_t, ldh_t );
99  if( ( LAPACKE_lsame( job, 'l' ) || LAPACKE_lsame( job, 'b' ) ) &&
100  LAPACKE_lsame( initv, 'v' ) ) {
101  LAPACKE_dge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
102  }
103  if( ( LAPACKE_lsame( job, 'r' ) || LAPACKE_lsame( job, 'b' ) ) &&
104  LAPACKE_lsame( initv, 'v' ) ) {
105  LAPACKE_dge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
106  }
107  /* Call LAPACK function and adjust info */
108  LAPACK_dhsein( &job, &eigsrc, &initv, select, &n, h_t, &ldh_t, wr, wi,
109  vl_t, &ldvl_t, vr_t, &ldvr_t, &mm, m, work, ifaill,
110  ifailr, &info );
111  if( info < 0 ) {
112  info = info - 1;
113  }
114  /* Transpose output matrices */
115  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'l' ) ) {
116  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
117  ldvl );
118  }
119  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'r' ) ) {
120  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
121  ldvr );
122  }
123  /* Release memory and exit */
124  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'r' ) ) {
125  LAPACKE_free( vr_t );
126  }
127 exit_level_2:
128  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'l' ) ) {
129  LAPACKE_free( vl_t );
130  }
131 exit_level_1:
132  LAPACKE_free( h_t );
133 exit_level_0:
134  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
135  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
136  }
137  } else {
138  info = -1;
139  LAPACKE_xerbla( "LAPACKE_dhsein_work", info );
140  }
141  return info;
142 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_dhsein(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_int *info)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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