LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sptrfs_work()

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 
)

Definition at line 36 of file lapacke_sptrfs_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_sptrfs( &n, &nrhs, d, e, df, ef, b, &ldb, x, &ldx, ferr, berr,
46  work, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int ldb_t = MAX(1,n);
52  lapack_int ldx_t = MAX(1,n);
53  float* b_t = NULL;
54  float* x_t = NULL;
55  /* Check leading dimension(s) */
56  if( ldb < nrhs ) {
57  info = -9;
58  LAPACKE_xerbla( "LAPACKE_sptrfs_work", info );
59  return info;
60  }
61  if( ldx < nrhs ) {
62  info = -11;
63  LAPACKE_xerbla( "LAPACKE_sptrfs_work", info );
64  return info;
65  }
66  /* Allocate memory for temporary array(s) */
67  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
68  if( b_t == NULL ) {
70  goto exit_level_0;
71  }
72  x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
73  if( x_t == NULL ) {
75  goto exit_level_1;
76  }
77  /* Transpose input matrices */
78  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
79  LAPACKE_sge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
80  /* Call LAPACK function and adjust info */
81  LAPACK_sptrfs( &n, &nrhs, d, e, df, ef, b_t, &ldb_t, x_t, &ldx_t, ferr,
82  berr, work, &info );
83  if( info < 0 ) {
84  info = info - 1;
85  }
86  /* Transpose output matrices */
87  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
88  /* Release memory and exit */
89  LAPACKE_free( x_t );
90 exit_level_1:
91  LAPACKE_free( b_t );
92 exit_level_0:
93  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
94  LAPACKE_xerbla( "LAPACKE_sptrfs_work", info );
95  }
96  } else {
97  info = -1;
98  LAPACKE_xerbla( "LAPACKE_sptrfs_work", info );
99  }
100  return info;
101 }
void LAPACK_sptrfs(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, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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