LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zcposv_work()

lapack_int LAPACKE_zcposv_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,
lapack_complex_double x,
lapack_int  ldx,
lapack_complex_double work,
lapack_complex_float swork,
double *  rwork,
lapack_int iter 
)

Definition at line 36 of file lapacke_zcposv_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_zcposv( &uplo, &n, &nrhs, a, &lda, b, &ldb, x, &ldx, work, swork,
48  rwork, iter, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int lda_t = MAX(1,n);
54  lapack_int ldb_t = MAX(1,n);
55  lapack_int ldx_t = MAX(1,n);
56  lapack_complex_double* a_t = NULL;
57  lapack_complex_double* b_t = NULL;
58  lapack_complex_double* x_t = NULL;
59  /* Check leading dimension(s) */
60  if( lda < n ) {
61  info = -6;
62  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
63  return info;
64  }
65  if( ldb < nrhs ) {
66  info = -8;
67  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
68  return info;
69  }
70  if( ldx < nrhs ) {
71  info = -10;
72  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
73  return info;
74  }
75  /* Allocate memory for temporary array(s) */
76  a_t = (lapack_complex_double*)
77  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
78  if( a_t == NULL ) {
80  goto exit_level_0;
81  }
82  b_t = (lapack_complex_double*)
84  ldb_t * MAX(1,nrhs) );
85  if( b_t == NULL ) {
87  goto exit_level_1;
88  }
89  x_t = (lapack_complex_double*)
91  ldx_t * MAX(1,nrhs) );
92  if( x_t == NULL ) {
94  goto exit_level_2;
95  }
96  /* Transpose input matrices */
97  LAPACKE_zpo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
98  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
99  /* Call LAPACK function and adjust info */
100  LAPACK_zcposv( &uplo, &n, &nrhs, a_t, &lda_t, b_t, &ldb_t, x_t, &ldx_t,
101  work, swork, rwork, iter, &info );
102  if( info < 0 ) {
103  info = info - 1;
104  }
105  /* Transpose output matrices */
106  LAPACKE_zpo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
107  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
108  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
109  /* Release memory and exit */
110  LAPACKE_free( x_t );
111 exit_level_2:
112  LAPACKE_free( b_t );
113 exit_level_1:
114  LAPACKE_free( a_t );
115 exit_level_0:
116  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
117  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
118  }
119  } else {
120  info = -1;
121  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
122  }
123  return info;
124 }
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)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
void LAPACK_zcposv(char *uplo, lapack_int *n, lapack_int *nrhs, lapack_complex_double *a, lapack_int *lda, lapack_complex_double *b, lapack_int *ldb, lapack_complex_double *x, lapack_int *ldx, lapack_complex_double *work, lapack_complex_float *swork, double *rwork, lapack_int *iter, lapack_int *info)
#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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