LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgbbrd_work()

lapack_int LAPACKE_dgbbrd_work ( int  matrix_layout,
char  vect,
lapack_int  m,
lapack_int  n,
lapack_int  ncc,
lapack_int  kl,
lapack_int  ku,
double *  ab,
lapack_int  ldab,
double *  d,
double *  e,
double *  q,
lapack_int  ldq,
double *  pt,
lapack_int  ldpt,
double *  c,
lapack_int  ldc,
double *  work 
)

Definition at line 36 of file lapacke_dgbbrd_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_dgbbrd( &vect, &m, &n, &ncc, &kl, &ku, ab, &ldab, d, e, q, &ldq,
47  pt, &ldpt, c, &ldc, work, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldab_t = MAX(1,kl+ku+1);
53  lapack_int ldc_t = MAX(1,m);
54  lapack_int ldpt_t = MAX(1,n);
55  lapack_int ldq_t = MAX(1,m);
56  double* ab_t = NULL;
57  double* q_t = NULL;
58  double* pt_t = NULL;
59  double* c_t = NULL;
60  /* Check leading dimension(s) */
61  if( ldab < n ) {
62  info = -9;
63  LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
64  return info;
65  }
66  if( ldc < ncc ) {
67  info = -17;
68  LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
69  return info;
70  }
71  if( ldpt < n ) {
72  info = -15;
73  LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
74  return info;
75  }
76  if( ldq < m ) {
77  info = -13;
78  LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
79  return info;
80  }
81  /* Allocate memory for temporary array(s) */
82  ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
83  if( ab_t == NULL ) {
85  goto exit_level_0;
86  }
87  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
88  q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,m) );
89  if( q_t == NULL ) {
91  goto exit_level_1;
92  }
93  }
94  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
95  pt_t = (double*)
96  LAPACKE_malloc( sizeof(double) * ldpt_t * MAX(1,n) );
97  if( pt_t == NULL ) {
99  goto exit_level_2;
100  }
101  }
102  if( ncc != 0 ) {
103  c_t = (double*)
104  LAPACKE_malloc( sizeof(double) * ldc_t * MAX(1,ncc) );
105  if( c_t == NULL ) {
107  goto exit_level_3;
108  }
109  }
110  /* Transpose input matrices */
111  LAPACKE_dgb_trans( matrix_layout, m, n, kl, ku, ab, ldab, ab_t, ldab_t );
112  if( ncc != 0 ) {
113  LAPACKE_dge_trans( matrix_layout, m, ncc, c, ldc, c_t, ldc_t );
114  }
115  /* Call LAPACK function and adjust info */
116  LAPACK_dgbbrd( &vect, &m, &n, &ncc, &kl, &ku, ab_t, &ldab_t, d, e, q_t,
117  &ldq_t, pt_t, &ldpt_t, c_t, &ldc_t, work, &info );
118  if( info < 0 ) {
119  info = info - 1;
120  }
121  /* Transpose output matrices */
122  LAPACKE_dgb_trans( LAPACK_COL_MAJOR, m, n, kl, ku, ab_t, ldab_t, ab,
123  ldab );
124  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
125  LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, m, q_t, ldq_t, q, ldq );
126  }
127  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
128  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, pt_t, ldpt_t, pt, ldpt );
129  }
130  if( ncc != 0 ) {
131  LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, ncc, c_t, ldc_t, c, ldc );
132  }
133  /* Release memory and exit */
134  if( ncc != 0 ) {
135  LAPACKE_free( c_t );
136  }
137 exit_level_3:
138  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
139  LAPACKE_free( pt_t );
140  }
141 exit_level_2:
142  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
143  LAPACKE_free( q_t );
144  }
145 exit_level_1:
146  LAPACKE_free( ab_t );
147 exit_level_0:
148  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
149  LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
150  }
151  } else {
152  info = -1;
153  LAPACKE_xerbla( "LAPACKE_dgbbrd_work", info );
154  }
155  return info;
156 }
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
void LAPACKE_dgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACKE_free(p)
Definition: lapacke.h:113
#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)
void LAPACK_dgbbrd(char *vect, lapack_int *m, lapack_int *n, lapack_int *ncc, lapack_int *kl, lapack_int *ku, double *ab, lapack_int *ldab, double *d, double *e, double *q, lapack_int *ldq, double *pt, lapack_int *ldpt, double *c, lapack_int *ldc, double *work, lapack_int *info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
Here is the call graph for this function:
Here is the caller graph for this function: