LAPACK  3.8.0
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 36 of file lapacke_zptrfs_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zptrfs( &uplo, &n, &nrhs, d, e, df, ef, b, &ldb, x, &ldx, ferr,
50  berr, work, rwork, &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  lapack_int ldb_t = MAX(1,n);
56  lapack_int ldx_t = MAX(1,n);
57  lapack_complex_double* b_t = NULL;
58  lapack_complex_double* x_t = NULL;
59  /* Check leading dimension(s) */
60  if( ldb < nrhs ) {
61  info = -10;
62  LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
63  return info;
64  }
65  if( ldx < nrhs ) {
66  info = -12;
67  LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
68  return info;
69  }
70  /* Allocate memory for temporary array(s) */
71  b_t = (lapack_complex_double*)
73  ldb_t * MAX(1,nrhs) );
74  if( b_t == NULL ) {
76  goto exit_level_0;
77  }
78  x_t = (lapack_complex_double*)
80  ldx_t * MAX(1,nrhs) );
81  if( x_t == NULL ) {
83  goto exit_level_1;
84  }
85  /* Transpose input matrices */
86  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
87  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
88  /* Call LAPACK function and adjust info */
89  LAPACK_zptrfs( &uplo, &n, &nrhs, d, e, df, ef, b_t, &ldb_t, x_t, &ldx_t,
90  ferr, berr, work, rwork, &info );
91  if( info < 0 ) {
92  info = info - 1;
93  }
94  /* Transpose output matrices */
95  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
96  /* Release memory and exit */
97  LAPACKE_free( x_t );
98 exit_level_1:
99  LAPACKE_free( b_t );
100 exit_level_0:
101  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
102  LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
103  }
104  } else {
105  info = -1;
106  LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
107  }
108  return info;
109 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#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
void LAPACK_zptrfs(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, lapack_int *info)
#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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