LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cptrfs()

lapack_int LAPACKE_cptrfs ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const float *  d,
const lapack_complex_float e,
const float *  df,
const lapack_complex_float ef,
const lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float x,
lapack_int  ldx,
float *  ferr,
float *  berr 
)

Definition at line 36 of file lapacke_cptrfs.c.

43 {
44  lapack_int info = 0;
45  float* rwork = NULL;
46  lapack_complex_float* work = NULL;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_cptrfs", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  /* Optionally check input matrices for NaNs */
53  if( LAPACKE_cge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
54  return -9;
55  }
56  if( LAPACKE_s_nancheck( n, d, 1 ) ) {
57  return -5;
58  }
59  if( LAPACKE_s_nancheck( n, df, 1 ) ) {
60  return -7;
61  }
62  if( LAPACKE_c_nancheck( n-1, e, 1 ) ) {
63  return -6;
64  }
65  if( LAPACKE_c_nancheck( n-1, ef, 1 ) ) {
66  return -8;
67  }
68  if( LAPACKE_cge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
69  return -11;
70  }
71 #endif
72  /* Allocate memory for working array(s) */
73  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
74  if( rwork == NULL ) {
76  goto exit_level_0;
77  }
78  work = (lapack_complex_float*)
79  LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,n) );
80  if( work == NULL ) {
82  goto exit_level_1;
83  }
84  /* Call middle-level interface */
85  info = LAPACKE_cptrfs_work( matrix_layout, uplo, n, nrhs, d, e, df, ef, b,
86  ldb, x, ldx, ferr, berr, work, rwork );
87  /* Release memory and exit */
88  LAPACKE_free( work );
89 exit_level_1:
90  LAPACKE_free( rwork );
91 exit_level_0:
92  if( info == LAPACK_WORK_MEMORY_ERROR ) {
93  LAPACKE_xerbla( "LAPACKE_cptrfs", info );
94  }
95  return info;
96 }
#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
#define lapack_complex_float
Definition: lapacke.h:74
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_c_nancheck(lapack_int n, const lapack_complex_float *x, lapack_int incx)
lapack_int LAPACKE_cptrfs_work(int matrix_layout, char uplo, lapack_int n, lapack_int nrhs, const float *d, const lapack_complex_float *e, const float *df, const lapack_complex_float *ef, const lapack_complex_float *b, lapack_int ldb, lapack_complex_float *x, lapack_int ldx, float *ferr, float *berr, lapack_complex_float *work, float *rwork)
#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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