LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dpprfs()

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

Definition at line 35 of file lapacke_dpprfs.c.

39 {
40  lapack_int info = 0;
41  lapack_int* iwork = NULL;
42  double* work = NULL;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_dpprfs", -1 );
45  return -1;
46  }
47 #ifndef LAPACK_DISABLE_NAN_CHECK
48  if( LAPACKE_get_nancheck() ) {
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dpp_nancheck( n, afp ) ) {
51  return -6;
52  }
53  if( LAPACKE_dpp_nancheck( n, ap ) ) {
54  return -5;
55  }
56  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
57  return -7;
58  }
59  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
60  return -9;
61  }
62  }
63 #endif
64  /* Allocate memory for working array(s) */
65  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
66  if( iwork == NULL ) {
68  goto exit_level_0;
69  }
70  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
71  if( work == NULL ) {
73  goto exit_level_1;
74  }
75  /* Call middle-level interface */
76  info = LAPACKE_dpprfs_work( matrix_layout, uplo, n, nrhs, ap, afp, b, ldb, x,
77  ldx, ferr, berr, work, iwork );
78  /* Release memory and exit */
79  LAPACKE_free( work );
80 exit_level_1:
81  LAPACKE_free( iwork );
82 exit_level_0:
83  if( info == LAPACK_WORK_MEMORY_ERROR ) {
84  LAPACKE_xerbla( "LAPACKE_dpprfs", info );
85  }
86  return info;
87 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
lapack_int LAPACKE_dpprfs_work(int matrix_layout, char uplo, lapack_int n, lapack_int nrhs, const double *ap, const double *afp, const double *b, lapack_int ldb, double *x, lapack_int ldx, double *ferr, double *berr, double *work, lapack_int *iwork)
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_dpp_nancheck(lapack_int n, const double *ap)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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