LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zptrfs()

lapack_int LAPACKE_zptrfs ( 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 
)

Definition at line 36 of file lapacke_zptrfs.c.

43 {
44  lapack_int info = 0;
45  double* rwork = NULL;
46  lapack_complex_double* work = NULL;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_zptrfs", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  if( LAPACKE_get_nancheck() ) {
53  /* Optionally check input matrices for NaNs */
54  if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
55  return -9;
56  }
57  if( LAPACKE_d_nancheck( n, d, 1 ) ) {
58  return -5;
59  }
60  if( LAPACKE_d_nancheck( n, df, 1 ) ) {
61  return -7;
62  }
63  if( LAPACKE_z_nancheck( n-1, e, 1 ) ) {
64  return -6;
65  }
66  if( LAPACKE_z_nancheck( n-1, ef, 1 ) ) {
67  return -8;
68  }
69  if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
70  return -11;
71  }
72  }
73 #endif
74  /* Allocate memory for working array(s) */
75  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
76  if( rwork == NULL ) {
78  goto exit_level_0;
79  }
80  work = (lapack_complex_double*)
81  LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,n) );
82  if( work == NULL ) {
84  goto exit_level_1;
85  }
86  /* Call middle-level interface */
87  info = LAPACKE_zptrfs_work( matrix_layout, uplo, n, nrhs, d, e, df, ef, b,
88  ldb, x, ldx, ferr, berr, work, rwork );
89  /* Release memory and exit */
90  LAPACKE_free( work );
91 exit_level_1:
92  LAPACKE_free( rwork );
93 exit_level_0:
94  if( info == LAPACK_WORK_MEMORY_ERROR ) {
95  LAPACKE_xerbla( "LAPACKE_zptrfs", info );
96  }
97  return info;
98 }
lapack_logical LAPACKE_z_nancheck(lapack_int n, const lapack_complex_double *x, lapack_int incx)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
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)
#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
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
int LAPACKE_get_nancheck()
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