LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dtprfs()

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

Definition at line 36 of file lapacke_dtprfs.c.

40 {
41  lapack_int info = 0;
42  lapack_int* iwork = NULL;
43  double* work = NULL;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_dtprfs", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dtp_nancheck( matrix_layout, uplo, diag, n, ap ) ) {
51  return -7;
52  }
53  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
54  return -8;
55  }
56  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
57  return -10;
58  }
59 #endif
60  /* Allocate memory for working array(s) */
61  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
62  if( iwork == NULL ) {
64  goto exit_level_0;
65  }
66  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
67  if( work == NULL ) {
69  goto exit_level_1;
70  }
71  /* Call middle-level interface */
72  info = LAPACKE_dtprfs_work( matrix_layout, uplo, trans, diag, n, nrhs, ap, b,
73  ldb, x, ldx, ferr, berr, work, iwork );
74  /* Release memory and exit */
75  LAPACKE_free( work );
76 exit_level_1:
77  LAPACKE_free( iwork );
78 exit_level_0:
79  if( info == LAPACK_WORK_MEMORY_ERROR ) {
80  LAPACKE_xerbla( "LAPACKE_dtprfs", info );
81  }
82  return info;
83 }
lapack_int LAPACKE_dtprfs_work(int matrix_layout, char uplo, char trans, char diag, lapack_int n, lapack_int nrhs, const double *ap, const double *b, lapack_int ldb, const double *x, lapack_int ldx, double *ferr, double *berr, double *work, lapack_int *iwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
lapack_logical LAPACKE_dtp_nancheck(int matrix_layout, char uplo, char diag, lapack_int n, const double *ap)
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#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
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