LAPACK  3.10.0
LAPACK: Linear Algebra PACKage
lapacke_clarfb_work.c
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function clarfb
30 * Author: Intel Corporation
31 *****************************************************************************/
32 
33 #include "lapacke_utils.h"
34 
35 lapack_int LAPACKE_clarfb_work( int matrix_layout, char side, char trans,
36  char direct, char storev, lapack_int m,
37  lapack_int n, lapack_int k,
38  const lapack_complex_float* v, lapack_int ldv,
39  const lapack_complex_float* t, lapack_int ldt,
40  lapack_complex_float* c, lapack_int ldc,
41  lapack_complex_float* work, lapack_int ldwork )
42 {
43  lapack_int info = 0;
44  lapack_int nrows_v, ncols_v;
45  lapack_int ldc_t, ldt_t, ldv_t;
46  lapack_complex_float *v_t = NULL, *t_t = NULL, *c_t = NULL;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_clarfb( &side, &trans, &direct, &storev, &m, &n, &k, v, &ldv, t,
50  &ldt, c, &ldc, work, &ldwork );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  nrows_v = ( LAPACKE_lsame( storev, 'c' ) &&
56  LAPACKE_lsame( side, 'l' ) ) ? m :
57  ( ( LAPACKE_lsame( storev, 'c' ) &&
58  LAPACKE_lsame( side, 'r' ) ) ? n :
59  ( LAPACKE_lsame( storev, 'r' ) ? k : 1) );
60  ncols_v = LAPACKE_lsame( storev, 'c' ) ? k :
61  ( ( LAPACKE_lsame( storev, 'r' ) &&
62  LAPACKE_lsame( side, 'l' ) ) ? m :
63  ( ( LAPACKE_lsame( storev, 'r' ) &&
64  LAPACKE_lsame( side, 'r' ) ) ? n : 1) );
65  ldc_t = MAX(1,m);
66  ldt_t = MAX(1,k);
67  ldv_t = MAX(1,nrows_v);
68  /* Check leading dimension(s) */
69  if( ldc < n ) {
70  info = -14;
71  LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
72  return info;
73  }
74  if( ldt < k ) {
75  info = -12;
76  LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
77  return info;
78  }
79  if( ldv < ncols_v ) {
80  info = -10;
81  LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
82  return info;
83  }
84  /* Allocate memory for temporary array(s) */
85  v_t = (lapack_complex_float*)
86  LAPACKE_malloc( sizeof(lapack_complex_float) *
87  ldv_t * MAX(1,ncols_v) );
88  if( v_t == NULL ) {
89  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
90  goto exit_level_0;
91  }
92  t_t = (lapack_complex_float*)
93  LAPACKE_malloc( sizeof(lapack_complex_float) * ldt_t * MAX(1,k) );
94  if( t_t == NULL ) {
95  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
96  goto exit_level_1;
97  }
98  c_t = (lapack_complex_float*)
99  LAPACKE_malloc( sizeof(lapack_complex_float) * ldc_t * MAX(1,n) );
100  if( c_t == NULL ) {
101  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
102  goto exit_level_2;
103  }
104  /* Transpose input matrices */
105  if( LAPACKE_lsame( storev, 'c' ) && LAPACKE_lsame( direct, 'f' ) ) {
106  LAPACKE_ctr_trans( matrix_layout, 'l', 'u', k, v, ldv, v_t, ldv_t );
107  LAPACKE_cge_trans( matrix_layout, nrows_v-k, ncols_v, &v[k*ldv], ldv,
108  &v_t[k], ldv_t );
109  } else if( LAPACKE_lsame( storev, 'c' ) &&
110  LAPACKE_lsame( direct, 'b' ) ) {
111  if( k > nrows_v ) {
112  LAPACKE_xerbla( "LAPACKE_clarfb_work", -8 );
113  return -8;
114  }
115  LAPACKE_ctr_trans( matrix_layout, 'u', 'u', k, &v[(nrows_v-k)*ldv],
116  ldv, &v_t[nrows_v-k], ldv_t );
117  LAPACKE_cge_trans( matrix_layout, nrows_v-k, ncols_v, v, ldv, v_t,
118  ldv_t );
119  } else if( LAPACKE_lsame( storev, 'r' ) &&
120  LAPACKE_lsame( direct, 'f' ) ) {
121  LAPACKE_ctr_trans( matrix_layout, 'u', 'u', k, v, ldv, v_t, ldv_t );
122  LAPACKE_cge_trans( matrix_layout, nrows_v, ncols_v-k, &v[k], ldv,
123  &v_t[k*ldv_t], ldv_t );
124  } else if( LAPACKE_lsame( storev, 'r' ) &&
125  LAPACKE_lsame( direct, 'b' ) ) {
126  if( k > ncols_v ) {
127  LAPACKE_xerbla( "LAPACKE_clarfb_work", -8 );
128  return -8;
129  }
130  LAPACKE_ctr_trans( matrix_layout, 'l', 'u', k, &v[ncols_v-k], ldv,
131  &v_t[(ncols_v-k)*ldv_t], ldv_t );
132  LAPACKE_cge_trans( matrix_layout, nrows_v, ncols_v-k, v, ldv, v_t,
133  ldv_t );
134  }
135  LAPACKE_cge_trans( matrix_layout, k, k, t, ldt, t_t, ldt_t );
136  LAPACKE_cge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
137  /* Call LAPACK function and adjust info */
138  LAPACK_clarfb( &side, &trans, &direct, &storev, &m, &n, &k, v_t, &ldv_t,
139  t_t, &ldt_t, c_t, &ldc_t, work, &ldwork );
140  info = 0; /* LAPACK call is ok! */
141  /* Transpose output matrices */
142  LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
143  /* Release memory and exit */
144  LAPACKE_free( c_t );
145 exit_level_2:
146  LAPACKE_free( t_t );
147 exit_level_1:
148  LAPACKE_free( v_t );
149 exit_level_0:
150  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
151  LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
152  }
153  } else {
154  info = -1;
155  LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
156  }
157  return info;
158 }
lapack_int
#define lapack_int
Definition: lapack.h:83
LAPACK_clarfb
#define LAPACK_clarfb(...)
Definition: lapack.h:10449
lapack_complex_float
#define lapack_complex_float
Definition: lapack.h:45
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_clarfb_work
lapack_int LAPACKE_clarfb_work(int matrix_layout, char side, char trans, char direct, char storev, lapack_int m, lapack_int n, lapack_int k, const lapack_complex_float *v, lapack_int ldv, const lapack_complex_float *t, lapack_int ldt, lapack_complex_float *c, lapack_int ldc, lapack_complex_float *work, lapack_int ldwork)
Definition: lapacke_clarfb_work.c:35
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
LAPACKE_ctr_trans
void LAPACKE_ctr_trans(int matrix_layout, char uplo, char diag, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
Definition: lapacke_ctr_trans.c:39
LAPACKE_cge_trans
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
Definition: lapacke_cge_trans.c:39
lapacke_utils.h