LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dtgevc_work()

lapack_int LAPACKE_dtgevc_work ( int  matrix_layout,
char  side,
char  howmny,
const lapack_logical select,
lapack_int  n,
const double *  s,
lapack_int  lds,
const double *  p,
lapack_int  ldp,
double *  vl,
lapack_int  ldvl,
double *  vr,
lapack_int  ldvr,
lapack_int  mm,
lapack_int m,
double *  work 
)

Definition at line 35 of file lapacke_dtgevc_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_dtgevc( &side, &howmny, select, &n, s, &lds, p, &ldp, vl, &ldvl,
46  vr, &ldvr, &mm, m, work, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int ldp_t = MAX(1,n);
52  lapack_int lds_t = MAX(1,n);
53  lapack_int ldvl_t = MAX(1,n);
54  lapack_int ldvr_t = MAX(1,n);
55  double* s_t = NULL;
56  double* p_t = NULL;
57  double* vl_t = NULL;
58  double* vr_t = NULL;
59  /* Check leading dimension(s) */
60  if( ldp < n ) {
61  info = -9;
62  LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
63  return info;
64  }
65  if( lds < n ) {
66  info = -7;
67  LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
68  return info;
69  }
70  if( ldvl < mm ) {
71  info = -11;
72  LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
73  return info;
74  }
75  if( ldvr < mm ) {
76  info = -13;
77  LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
78  return info;
79  }
80  /* Allocate memory for temporary array(s) */
81  s_t = (double*)LAPACKE_malloc( sizeof(double) * lds_t * MAX(1,n) );
82  if( s_t == NULL ) {
84  goto exit_level_0;
85  }
86  p_t = (double*)LAPACKE_malloc( sizeof(double) * ldp_t * MAX(1,n) );
87  if( p_t == NULL ) {
89  goto exit_level_1;
90  }
91  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
92  vl_t = (double*)
93  LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,mm) );
94  if( vl_t == NULL ) {
96  goto exit_level_2;
97  }
98  }
99  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
100  vr_t = (double*)
101  LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,mm) );
102  if( vr_t == NULL ) {
104  goto exit_level_3;
105  }
106  }
107  /* Transpose input matrices */
108  LAPACKE_dge_trans( matrix_layout, n, n, s, lds, s_t, lds_t );
109  LAPACKE_dge_trans( matrix_layout, n, n, p, ldp, p_t, ldp_t );
110  if( ( LAPACKE_lsame( side, 'l' ) || LAPACKE_lsame( side, 'b' ) ) &&
111  LAPACKE_lsame( howmny, 'b' ) ) {
112  LAPACKE_dge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
113  }
114  if( ( LAPACKE_lsame( side, 'r' ) || LAPACKE_lsame( side, 'b' ) ) &&
115  LAPACKE_lsame( howmny, 'b' ) ) {
116  LAPACKE_dge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
117  }
118  /* Call LAPACK function and adjust info */
119  LAPACK_dtgevc( &side, &howmny, select, &n, s_t, &lds_t, p_t, &ldp_t,
120  vl_t, &ldvl_t, vr_t, &ldvr_t, &mm, m, work, &info );
121  if( info < 0 ) {
122  info = info - 1;
123  }
124  /* Transpose output matrices */
125  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
126  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
127  ldvl );
128  }
129  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
130  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
131  ldvr );
132  }
133  /* Release memory and exit */
134  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
135  LAPACKE_free( vr_t );
136  }
137 exit_level_3:
138  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
139  LAPACKE_free( vl_t );
140  }
141 exit_level_2:
142  LAPACKE_free( p_t );
143 exit_level_1:
144  LAPACKE_free( s_t );
145 exit_level_0:
146  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
147  LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
148  }
149  } else {
150  info = -1;
151  LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
152  }
153  return info;
154 }
#define LAPACK_dtgevc(...)
Definition: lapack.h:20079
#define lapack_int
Definition: lapack.h:83
#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)
#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)
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