LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zptrfs_work()

lapack_int LAPACKE_zptrfs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const double *  d,
const lapack_complex_double e,
const double *  df,
const lapack_complex_double ef,
const lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double x,
lapack_int  ldx,
double *  ferr,
double *  berr,
lapack_complex_double work,
double *  rwork 
)

Definition at line 35 of file lapacke_zptrfs_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_zptrfs( &uplo, &n, &nrhs, d, e, df, ef, b, &ldb, x, &ldx, ferr,
49  berr, work, rwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int ldb_t = MAX(1,n);
55  lapack_int ldx_t = MAX(1,n);
56  lapack_complex_double* b_t = NULL;
57  lapack_complex_double* x_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldb < nrhs ) {
60  info = -10;
61  LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
62  return info;
63  }
64  if( ldx < nrhs ) {
65  info = -12;
66  LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
67  return info;
68  }
69  /* Allocate memory for temporary array(s) */
70  b_t = (lapack_complex_double*)
72  ldb_t * MAX(1,nrhs) );
73  if( b_t == NULL ) {
75  goto exit_level_0;
76  }
77  x_t = (lapack_complex_double*)
79  ldx_t * MAX(1,nrhs) );
80  if( x_t == NULL ) {
82  goto exit_level_1;
83  }
84  /* Transpose input matrices */
85  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
86  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
87  /* Call LAPACK function and adjust info */
88  LAPACK_zptrfs( &uplo, &n, &nrhs, d, e, df, ef, b_t, &ldb_t, x_t, &ldx_t,
89  ferr, berr, work, rwork, &info );
90  if( info < 0 ) {
91  info = info - 1;
92  }
93  /* Transpose output matrices */
94  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
95  /* Release memory and exit */
96  LAPACKE_free( x_t );
97 exit_level_1:
98  LAPACKE_free( b_t );
99 exit_level_0:
100  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
101  LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
102  }
103  } else {
104  info = -1;
105  LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
106  }
107  return info;
108 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_double
Definition: lapack.h:63
#define LAPACK_zptrfs(...)
Definition: lapack.h:14498
#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
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