LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
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 
)

Definition at line 36 of file lapacke_zposvx_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zposvx( &fact, &uplo, &n, &nrhs, a, &lda, af, &ldaf, equed, s, b,
50  &ldb, x, &ldx, rcond, ferr, berr, work, rwork, &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  lapack_int lda_t = MAX(1,n);
56  lapack_int ldaf_t = MAX(1,n);
57  lapack_int ldb_t = MAX(1,n);
58  lapack_int ldx_t = MAX(1,n);
59  lapack_complex_double* a_t = NULL;
60  lapack_complex_double* af_t = NULL;
61  lapack_complex_double* b_t = NULL;
62  lapack_complex_double* x_t = NULL;
63  /* Check leading dimension(s) */
64  if( lda < n ) {
65  info = -7;
66  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
67  return info;
68  }
69  if( ldaf < n ) {
70  info = -9;
71  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
72  return info;
73  }
74  if( ldb < nrhs ) {
75  info = -13;
76  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
77  return info;
78  }
79  if( ldx < nrhs ) {
80  info = -15;
81  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
82  return info;
83  }
84  /* Allocate memory for temporary array(s) */
85  a_t = (lapack_complex_double*)
86  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
87  if( a_t == NULL ) {
88  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
89  goto exit_level_0;
90  }
91  af_t = (lapack_complex_double*)
92  LAPACKE_malloc( sizeof(lapack_complex_double) * ldaf_t * MAX(1,n) );
93  if( af_t == NULL ) {
94  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
95  goto exit_level_1;
96  }
97  b_t = (lapack_complex_double*)
98  LAPACKE_malloc( sizeof(lapack_complex_double) *
99  ldb_t * MAX(1,nrhs) );
100  if( b_t == NULL ) {
101  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
102  goto exit_level_2;
103  }
104  x_t = (lapack_complex_double*)
105  LAPACKE_malloc( sizeof(lapack_complex_double) *
106  ldx_t * MAX(1,nrhs) );
107  if( x_t == NULL ) {
108  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
109  goto exit_level_3;
110  }
111  /* Transpose input matrices */
112  LAPACKE_zpo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
113  if( LAPACKE_lsame( fact, 'f' ) ) {
114  LAPACKE_zpo_trans( matrix_layout, uplo, n, af, ldaf, af_t, ldaf_t );
115  }
116  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
117  /* Call LAPACK function and adjust info */
118  LAPACK_zposvx( &fact, &uplo, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t,
119  equed, s, b_t, &ldb_t, x_t, &ldx_t, rcond, ferr, berr,
120  work, rwork, &info );
121  if( info < 0 ) {
122  info = info - 1;
123  }
124  /* Transpose output matrices */
125  if( LAPACKE_lsame( fact, 'e' ) && LAPACKE_lsame( *equed, 'y' ) ) {
126  LAPACKE_zpo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
127  }
128  if( LAPACKE_lsame( fact, 'e' ) || LAPACKE_lsame( fact, 'n' ) ) {
129  LAPACKE_zpo_trans( LAPACK_COL_MAJOR, uplo, n, af_t, ldaf_t, af,
130  ldaf );
131  }
132  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
133  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
134  /* Release memory and exit */
135  LAPACKE_free( x_t );
136 exit_level_3:
137  LAPACKE_free( b_t );
138 exit_level_2:
139  LAPACKE_free( af_t );
140 exit_level_1:
141  LAPACKE_free( a_t );
142 exit_level_0:
143  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
144  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
145  }
146  } else {
147  info = -1;
148  LAPACKE_xerbla( "LAPACKE_zposvx_work", info );
149  }
150  return info;
151 }
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
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
LAPACK_zposvx
void LAPACK_zposvx(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, lapack_int *info)
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_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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