LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_zposv_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
lapack_complex_double *  a,
lapack_int  lda,
lapack_complex_double *  b,
lapack_int  ldb 
)

Definition at line 36 of file lapacke_zposv_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_zposv( &uplo, &n, &nrhs, a, &lda, b, &ldb, &info );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int lda_t = MAX(1,n);
50  lapack_int ldb_t = MAX(1,n);
51  lapack_complex_double* a_t = NULL;
52  lapack_complex_double* b_t = NULL;
53  /* Check leading dimension(s) */
54  if( lda < n ) {
55  info = -6;
56  LAPACKE_xerbla( "LAPACKE_zposv_work", info );
57  return info;
58  }
59  if( ldb < nrhs ) {
60  info = -8;
61  LAPACKE_xerbla( "LAPACKE_zposv_work", info );
62  return info;
63  }
64  /* Allocate memory for temporary array(s) */
65  a_t = (lapack_complex_double*)
66  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
67  if( a_t == NULL ) {
68  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
69  goto exit_level_0;
70  }
71  b_t = (lapack_complex_double*)
72  LAPACKE_malloc( sizeof(lapack_complex_double) *
73  ldb_t * MAX(1,nrhs) );
74  if( b_t == NULL ) {
75  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
76  goto exit_level_1;
77  }
78  /* Transpose input matrices */
79  LAPACKE_zpo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
80  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
81  /* Call LAPACK function and adjust info */
82  LAPACK_zposv( &uplo, &n, &nrhs, a_t, &lda_t, b_t, &ldb_t, &info );
83  if( info < 0 ) {
84  info = info - 1;
85  }
86  /* Transpose output matrices */
87  LAPACKE_zpo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
88  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
89  /* Release memory and exit */
90  LAPACKE_free( b_t );
91 exit_level_1:
92  LAPACKE_free( a_t );
93 exit_level_0:
94  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
95  LAPACKE_xerbla( "LAPACKE_zposv_work", info );
96  }
97  } else {
98  info = -1;
99  LAPACKE_xerbla( "LAPACKE_zposv_work", info );
100  }
101  return info;
102 }
LAPACKE_zpo_trans
void LAPACKE_zpo_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
Definition: lapacke_zpo_trans.c:40
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_complex_double
#define lapack_complex_double
Definition: lapacke.h:90
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:47
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:113
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:37
lapack_int
#define lapack_int
Definition: lapacke.h:47
LAPACK_zposv
void LAPACK_zposv(char *uplo, lapack_int *n, lapack_int *nrhs, lapack_complex_double *a, lapack_int *lda, lapack_complex_double *b, lapack_int *ldb, lapack_int *info)
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
LAPACKE_zge_trans
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)
Definition: lapacke_zge_trans.c:40

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