LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zpttrs_work()

lapack_int LAPACKE_zpttrs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const double *  d,
const lapack_complex_double e,
lapack_complex_double b,
lapack_int  ldb 
)

Definition at line 36 of file lapacke_zpttrs_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_zpttrs( &uplo, &n, &nrhs, d, e, b, &ldb, &info );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int ldb_t = MAX(1,n);
50  lapack_complex_double* b_t = NULL;
51  /* Check leading dimension(s) */
52  if( ldb < nrhs ) {
53  info = -8;
54  LAPACKE_xerbla( "LAPACKE_zpttrs_work", info );
55  return info;
56  }
57  /* Allocate memory for temporary array(s) */
58  b_t = (lapack_complex_double*)
60  ldb_t * MAX(1,nrhs) );
61  if( b_t == NULL ) {
63  goto exit_level_0;
64  }
65  /* Transpose input matrices */
66  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
67  /* Call LAPACK function and adjust info */
68  LAPACK_zpttrs( &uplo, &n, &nrhs, d, e, b_t, &ldb_t, &info );
69  if( info < 0 ) {
70  info = info - 1;
71  }
72  /* Transpose output matrices */
73  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
74  /* Release memory and exit */
75  LAPACKE_free( b_t );
76 exit_level_0:
77  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
78  LAPACKE_xerbla( "LAPACKE_zpttrs_work", info );
79  }
80  } else {
81  info = -1;
82  LAPACKE_xerbla( "LAPACKE_zpttrs_work", info );
83  }
84  return info;
85 }
void LAPACK_zpttrs(char *uplo, lapack_int *n, lapack_int *nrhs, const double *d, const lapack_complex_double *e, lapack_complex_double *b, lapack_int *ldb, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#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
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
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