LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgbbrd_work()

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

Definition at line 36 of file lapacke_sgbbrd_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_sgbbrd( &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  float* ab_t = NULL;
57  float* q_t = NULL;
58  float* pt_t = NULL;
59  float* c_t = NULL;
60  /* Check leading dimension(s) */
61  if( ldab < n ) {
62  info = -9;
63  LAPACKE_xerbla( "LAPACKE_sgbbrd_work", info );
64  return info;
65  }
66  if( ldc < ncc ) {
67  info = -17;
68  LAPACKE_xerbla( "LAPACKE_sgbbrd_work", info );
69  return info;
70  }
71  if( ldpt < n ) {
72  info = -15;
73  LAPACKE_xerbla( "LAPACKE_sgbbrd_work", info );
74  return info;
75  }
76  if( ldq < m ) {
77  info = -13;
78  LAPACKE_xerbla( "LAPACKE_sgbbrd_work", info );
79  return info;
80  }
81  /* Allocate memory for temporary array(s) */
82  ab_t = (float*)LAPACKE_malloc( sizeof(float) * 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 = (float*)LAPACKE_malloc( sizeof(float) * 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 = (float*)LAPACKE_malloc( sizeof(float) * ldpt_t * MAX(1,n) );
96  if( pt_t == NULL ) {
98  goto exit_level_2;
99  }
100  }
101  if( ncc != 0 ) {
102  c_t = (float*)LAPACKE_malloc( sizeof(float) * ldc_t * MAX(1,ncc) );
103  if( c_t == NULL ) {
105  goto exit_level_3;
106  }
107  }
108  /* Transpose input matrices */
109  LAPACKE_sgb_trans( matrix_layout, m, n, kl, ku, ab, ldab, ab_t, ldab_t );
110  if( ncc != 0 ) {
111  LAPACKE_sge_trans( matrix_layout, m, ncc, c, ldc, c_t, ldc_t );
112  }
113  /* Call LAPACK function and adjust info */
114  LAPACK_sgbbrd( &vect, &m, &n, &ncc, &kl, &ku, ab_t, &ldab_t, d, e, q_t,
115  &ldq_t, pt_t, &ldpt_t, c_t, &ldc_t, work, &info );
116  if( info < 0 ) {
117  info = info - 1;
118  }
119  /* Transpose output matrices */
120  LAPACKE_sgb_trans( LAPACK_COL_MAJOR, m, n, kl, ku, ab_t, ldab_t, ab,
121  ldab );
122  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
123  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, m, q_t, ldq_t, q, ldq );
124  }
125  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
126  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, pt_t, ldpt_t, pt, ldpt );
127  }
128  if( ncc != 0 ) {
129  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, ncc, c_t, ldc_t, c, ldc );
130  }
131  /* Release memory and exit */
132  if( ncc != 0 ) {
133  LAPACKE_free( c_t );
134  }
135 exit_level_3:
136  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'p' ) ) {
137  LAPACKE_free( pt_t );
138  }
139 exit_level_2:
140  if( LAPACKE_lsame( vect, 'b' ) || LAPACKE_lsame( vect, 'q' ) ) {
141  LAPACKE_free( q_t );
142  }
143 exit_level_1:
144  LAPACKE_free( ab_t );
145 exit_level_0:
146  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
147  LAPACKE_xerbla( "LAPACKE_sgbbrd_work", info );
148  }
149  } else {
150  info = -1;
151  LAPACKE_xerbla( "LAPACKE_sgbbrd_work", info );
152  }
153  return info;
154 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_sgbbrd(char *vect, lapack_int *m, lapack_int *n, lapack_int *ncc, lapack_int *kl, lapack_int *ku, float *ab, lapack_int *ldab, float *d, float *e, float *q, lapack_int *ldq, float *pt, lapack_int *ldpt, float *c, lapack_int *ldc, float *work, lapack_int *info)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#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 LAPACKE_sgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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