LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sptrfs()

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

Definition at line 36 of file lapacke_sptrfs.c.

40 {
41  lapack_int info = 0;
42  float* work = NULL;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_sptrfs", -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_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
51  return -8;
52  }
53  if( LAPACKE_s_nancheck( n, d, 1 ) ) {
54  return -4;
55  }
56  if( LAPACKE_s_nancheck( n, df, 1 ) ) {
57  return -6;
58  }
59  if( LAPACKE_s_nancheck( n-1, e, 1 ) ) {
60  return -5;
61  }
62  if( LAPACKE_s_nancheck( n-1, ef, 1 ) ) {
63  return -7;
64  }
65  if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
66  return -10;
67  }
68  }
69 #endif
70  /* Allocate memory for working array(s) */
71  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n) );
72  if( work == NULL ) {
74  goto exit_level_0;
75  }
76  /* Call middle-level interface */
77  info = LAPACKE_sptrfs_work( matrix_layout, n, nrhs, d, e, df, ef, b, ldb, x,
78  ldx, ferr, berr, work );
79  /* Release memory and exit */
80  LAPACKE_free( work );
81 exit_level_0:
82  if( info == LAPACK_WORK_MEMORY_ERROR ) {
83  LAPACKE_xerbla( "LAPACKE_sptrfs", info );
84  }
85  return info;
86 }
#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_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_int LAPACKE_sptrfs_work(int matrix_layout, lapack_int n, lapack_int nrhs, const float *d, const float *e, const float *df, const float *ef, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *ferr, float *berr, float *work)
#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
int LAPACKE_get_nancheck()
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