LAPACK  3.10.0
LAPACK: Linear Algebra PACKage
lapacke_zposvx_work.c
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function zposvx
30 * Author: Intel Corporation
31 *****************************************************************************/
32 
33 #include "lapacke_utils.h"
34 
35 lapack_int LAPACKE_zposvx_work( int matrix_layout, char fact, char uplo,
36  lapack_int n, lapack_int nrhs,
39  char* equed, double* s,
42  double* rcond, double* ferr, double* berr,
43  lapack_complex_double* work, double* rwork )
44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_zposvx( &fact, &uplo, &n, &nrhs, a, &lda, af, &ldaf, equed, s, b,
49  &ldb, x, &ldx, rcond, ferr, berr, work, rwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int lda_t = MAX(1,n);
55  lapack_int ldaf_t = MAX(1,n);
56  lapack_int ldb_t = MAX(1,n);
57  lapack_int ldx_t = MAX(1,n);
58  lapack_complex_double* a_t = NULL;
59  lapack_complex_double* af_t = NULL;
60  lapack_complex_double* b_t = NULL;
61  lapack_complex_double* x_t = NULL;
62  /* Check leading dimension(s) */
63  if( lda < n ) {
64  info = -7;
65  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
66  return info;
67  }
68  if( ldaf < n ) {
69  info = -9;
70  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
71  return info;
72  }
73  if( ldb < nrhs ) {
74  info = -13;
75  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
76  return info;
77  }
78  if( ldx < nrhs ) {
79  info = -15;
80  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
81  return info;
82  }
83  /* Allocate memory for temporary array(s) */
84  a_t = (lapack_complex_double*)
85  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
86  if( a_t == NULL ) {
88  goto exit_level_0;
89  }
90  af_t = (lapack_complex_double*)
91  LAPACKE_malloc( sizeof(lapack_complex_double) * ldaf_t * MAX(1,n) );
92  if( af_t == NULL ) {
94  goto exit_level_1;
95  }
96  b_t = (lapack_complex_double*)
98  ldb_t * MAX(1,nrhs) );
99  if( b_t == NULL ) {
101  goto exit_level_2;
102  }
103  x_t = (lapack_complex_double*)
105  ldx_t * MAX(1,nrhs) );
106  if( x_t == NULL ) {
108  goto exit_level_3;
109  }
110  /* Transpose input matrices */
111  LAPACKE_zpo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
112  if( LAPACKE_lsame( fact, 'f' ) ) {
113  LAPACKE_zpo_trans( matrix_layout, uplo, n, af, ldaf, af_t, ldaf_t );
114  }
115  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
116  /* Call LAPACK function and adjust info */
117  LAPACK_zposvx( &fact, &uplo, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
118  equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond, ferr, berr,
119  work, rwork, &info );
120  if( info < 0 ) {
121  info = info - 1;
122  }
123  /* Transpose output matrices */
124  if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
125  LAPACKE_zpo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
126  }
127  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
128  LAPACKE_zpo_trans( LAPACK_COL_MAJOR, uplo, n, af_t, ldaf_t, af,
129  ldaf );
130  }
131  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
132  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
133  /* Release memory and exit */
134  LAPACKE_free( x_t );
135 exit_level_3:
136  LAPACKE_free( b_t );
137 exit_level_2:
138  LAPACKE_free( af_t );
139 exit_level_1:
140  LAPACKE_free( a_t );
141 exit_level_0:
142  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
143  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
144  }
145  } else {
146  info = -1;
147  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
148  }
149  return info;
150 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_zposvx(...)
Definition: lapack.h:13176
#define lapack_complex_double
Definition: lapack.h:63
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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)
lapack_int LAPACKE_zposvx_work(int matrix_layout, char fact, char uplo, lapack_int n, lapack_int nrhs, lapack_complex_double *a, lapack_int lda, lapack_complex_double *af, lapack_int ldaf, char *equed, double *s, lapack_complex_double *b, lapack_int ldb, lapack_complex_double *x, lapack_int ldx, double *rcond, double *ferr, double *berr, lapack_complex_double *work, double *rwork)