LAPACK  3.6.1 LAPACK: Linear Algebra PACKage
 lapack_int LAPACKE_dptsv_work ( int matrix_layout, lapack_int n, lapack_int nrhs, double * d, double * e, double * b, lapack_int ldb )

Definition at line 36 of file lapacke_dptsv_work.c.

38 {
39  lapack_int info = 0;
40  if( matrix_layout == LAPACK_COL_MAJOR ) {
41  /* Call LAPACK function and adjust info */
42  LAPACK_dptsv( &n, &nrhs, d, e, b, &ldb, &info );
43  if( info < 0 ) {
44  info = info - 1;
45  }
46  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
47  lapack_int ldb_t = MAX(1,n);
48  double* b_t = NULL;
49  /* Check leading dimension(s) */
50  if( ldb < nrhs ) {
51  info = -7;
52  LAPACKE_xerbla( "LAPACKE_dptsv_work", info );
53  return info;
54  }
55  /* Allocate memory for temporary array(s) */
56  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
57  if( b_t == NULL ) {
59  goto exit_level_0;
60  }
61  /* Transpose input matrices */
62  LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
63  /* Call LAPACK function and adjust info */
64  LAPACK_dptsv( &n, &nrhs, d, e, b_t, &ldb_t, &info );
65  if( info < 0 ) {
66  info = info - 1;
67  }
68  /* Transpose output matrices */
69  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
70  /* Release memory and exit */
71  LAPACKE_free( b_t );
72 exit_level_0:
73  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
74  LAPACKE_xerbla( "LAPACKE_dptsv_work", info );
75  }
76  } else {
77  info = -1;
78  LAPACKE_xerbla( "LAPACKE_dptsv_work", info );
79  }
80  return info;
81 }
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
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_dptsv(lapack_int *n, lapack_int *nrhs, double *d, double *e, double *b, lapack_int *ldb, lapack_int *info)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123

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