LAPACK  3.10.1
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 35 of file lapacke_zcposv_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_zcposv( &uplo, &n, &nrhs, a, &lda, b, &ldb, x, &ldx, work, swork,
47  rwork, iter, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int lda_t = MAX(1,n);
53  lapack_int ldb_t = MAX(1,n);
54  lapack_int ldx_t = MAX(1,n);
55  lapack_complex_double* a_t = NULL;
56  lapack_complex_double* b_t = NULL;
57  lapack_complex_double* x_t = NULL;
58  /* Check leading dimension(s) */
59  if( lda < n ) {
60  info = -6;
61  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
62  return info;
63  }
64  if( ldb < nrhs ) {
65  info = -8;
66  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
67  return info;
68  }
69  if( ldx < nrhs ) {
70  info = -10;
71  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
72  return info;
73  }
74  /* Allocate memory for temporary array(s) */
75  a_t = (lapack_complex_double*)
76  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
77  if( a_t == NULL ) {
79  goto exit_level_0;
80  }
81  b_t = (lapack_complex_double*)
83  ldb_t * MAX(1,nrhs) );
84  if( b_t == NULL ) {
86  goto exit_level_1;
87  }
88  x_t = (lapack_complex_double*)
90  ldx_t * MAX(1,nrhs) );
91  if( x_t == NULL ) {
93  goto exit_level_2;
94  }
95  /* Transpose input matrices */
96  LAPACKE_zpo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
97  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
98  /* Call LAPACK function and adjust info */
99  LAPACK_zcposv( &uplo, &n, &nrhs, a_t, &lda_t, b_t, &ldb_t, x_t, &ldx_t,
100  work, swork, rwork, iter, &info );
101  if( info < 0 ) {
102  info = info - 1;
103  }
104  /* Transpose output matrices */
105  LAPACKE_zpo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
106  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
107  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
108  /* Release memory and exit */
109  LAPACKE_free( x_t );
110 exit_level_2:
111  LAPACKE_free( b_t );
112 exit_level_1:
113  LAPACKE_free( a_t );
114 exit_level_0:
115  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
116  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
117  }
118  } else {
119  info = -1;
120  LAPACKE_xerbla( "LAPACKE_zcposv_work", info );
121  }
122  return info;
123 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_double
Definition: lapack.h:63
#define LAPACK_zcposv(...)
Definition: lapack.h:13072
#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
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)
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