LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dlacpy_work()

lapack_int LAPACKE_dlacpy_work ( int  matrix_layout,
char  uplo,
lapack_int  m,
lapack_int  n,
const double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb 
)

Definition at line 35 of file lapacke_dlacpy_work.c.

38 {
39  lapack_int info = 0;
40  if( matrix_layout == LAPACK_COL_MAJOR ) {
41  /* Call LAPACK function and adjust info */
42  LAPACK_dlacpy( &uplo, &m, &n, a, &lda, b, &ldb );
43  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
44  lapack_int lda_t = MAX(1,m);
45  lapack_int ldb_t = MAX(1,m);
46  double* a_t = NULL;
47  double* b_t = NULL;
48  /* Check leading dimension(s) */
49  if( lda < n ) {
50  info = -6;
51  LAPACKE_xerbla( "LAPACKE_dlacpy_work", info );
52  return info;
53  }
54  if( ldb < n ) {
55  info = -8;
56  LAPACKE_xerbla( "LAPACKE_dlacpy_work", info );
57  return info;
58  }
59  /* Allocate memory for temporary array(s) */
60  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
61  if( a_t == NULL ) {
63  goto exit_level_0;
64  }
65  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
66  if( b_t == NULL ) {
68  goto exit_level_1;
69  }
70  /* Transpose input matrices */
71  LAPACKE_dge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
72  /* Call LAPACK function and adjust info */
73  LAPACK_dlacpy( &uplo, &m, &n, a_t, &lda_t, b_t, &ldb_t );
74  info = 0; /* LAPACK call is ok! */
75  /* Transpose output matrices */
76  LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, b_t, ldb_t, b, ldb );
77  /* Release memory and exit */
78  LAPACKE_free( b_t );
79 exit_level_1:
80  LAPACKE_free( a_t );
81 exit_level_0:
82  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
83  LAPACKE_xerbla( "LAPACKE_dlacpy_work", info );
84  }
85  } else {
86  info = -1;
87  LAPACKE_xerbla( "LAPACKE_dlacpy_work", info );
88  }
89  return info;
90 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_dlacpy(...)
Definition: lapack.h:9295
#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
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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