LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ztprfs_work()

lapack_int LAPACKE_ztprfs_work ( int  matrix_layout,
char  uplo,
char  trans,
char  diag,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_double ap,
const lapack_complex_double b,
lapack_int  ldb,
const lapack_complex_double x,
lapack_int  ldx,
double *  ferr,
double *  berr,
lapack_complex_double work,
double *  rwork 
)

Definition at line 36 of file lapacke_ztprfs_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_ztprfs( &uplo, &trans, &diag, &n, &nrhs, ap, b, &ldb, x, &ldx,
48  ferr, berr, work, rwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int ldb_t = MAX(1,n);
54  lapack_int ldx_t = MAX(1,n);
55  lapack_complex_double* b_t = NULL;
56  lapack_complex_double* x_t = NULL;
57  lapack_complex_double* ap_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldb < nrhs ) {
60  info = -9;
61  LAPACKE_xerbla( "LAPACKE_ztprfs_work", info );
62  return info;
63  }
64  if( ldx < nrhs ) {
65  info = -11;
66  LAPACKE_xerbla( "LAPACKE_ztprfs_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  ap_t = (lapack_complex_double*)
86  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
87  if( ap_t == NULL ) {
89  goto exit_level_2;
90  }
91  /* Transpose input matrices */
92  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
93  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
94  LAPACKE_ztp_trans( matrix_layout, uplo, diag, n, ap, ap_t );
95  /* Call LAPACK function and adjust info */
96  LAPACK_ztprfs( &uplo, &trans, &diag, &n, &nrhs, ap_t, b_t, &ldb_t, x_t,
97  &ldx_t, ferr, berr, work, rwork, &info );
98  if( info < 0 ) {
99  info = info - 1;
100  }
101  /* Release memory and exit */
102  LAPACKE_free( ap_t );
103 exit_level_2:
104  LAPACKE_free( x_t );
105 exit_level_1:
106  LAPACKE_free( b_t );
107 exit_level_0:
108  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
109  LAPACKE_xerbla( "LAPACKE_ztprfs_work", info );
110  }
111  } else {
112  info = -1;
113  LAPACKE_xerbla( "LAPACKE_ztprfs_work", info );
114  }
115  return info;
116 }
void LAPACK_ztprfs(char *uplo, char *trans, char *diag, lapack_int *n, lapack_int *nrhs, const lapack_complex_double *ap, const lapack_complex_double *b, lapack_int *ldb, const lapack_complex_double *x, lapack_int *ldx, double *ferr, double *berr, lapack_complex_double *work, double *rwork, lapack_int *info)
#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 LAPACKE_ztp_trans(int matrix_layout, char uplo, char diag, lapack_int n, const lapack_complex_double *in, lapack_complex_double *out)
#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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