LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_stbrfs_work()

lapack_int LAPACKE_stbrfs_work ( int  matrix_layout,
char  uplo,
char  trans,
char  diag,
lapack_int  n,
lapack_int  kd,
lapack_int  nrhs,
const float *  ab,
lapack_int  ldab,
const float *  b,
lapack_int  ldb,
const float *  x,
lapack_int  ldx,
float *  ferr,
float *  berr,
float *  work,
lapack_int iwork 
)

Definition at line 36 of file lapacke_stbrfs_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_stbrfs( &uplo, &trans, &diag, &n, &kd, &nrhs, ab, &ldab, b, &ldb,
47  x, &ldx, ferr, berr, work, iwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldab_t = MAX(1,kd+1);
53  lapack_int ldb_t = MAX(1,n);
54  lapack_int ldx_t = MAX(1,n);
55  float* ab_t = NULL;
56  float* b_t = NULL;
57  float* x_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldab < n ) {
60  info = -9;
61  LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
62  return info;
63  }
64  if( ldb < nrhs ) {
65  info = -11;
66  LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
67  return info;
68  }
69  if( ldx < nrhs ) {
70  info = -13;
71  LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
72  return info;
73  }
74  /* Allocate memory for temporary array(s) */
75  ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
76  if( ab_t == NULL ) {
78  goto exit_level_0;
79  }
80  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
81  if( b_t == NULL ) {
83  goto exit_level_1;
84  }
85  x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
86  if( x_t == NULL ) {
88  goto exit_level_2;
89  }
90  /* Transpose input matrices */
91  LAPACKE_stb_trans( matrix_layout, uplo, diag, n, kd, ab, ldab, ab_t,
92  ldab_t );
93  LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
94  LAPACKE_sge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
95  /* Call LAPACK function and adjust info */
96  LAPACK_stbrfs( &uplo, &trans, &diag, &n, &kd, &nrhs, ab_t, &ldab_t, b_t,
97  &ldb_t, x_t, &ldx_t, ferr, berr, work, iwork, &info );
98  if( info < 0 ) {
99  info = info - 1;
100  }
101  /* Release memory and exit */
102  LAPACKE_free( x_t );
103 exit_level_2:
104  LAPACKE_free( b_t );
105 exit_level_1:
106  LAPACKE_free( ab_t );
107 exit_level_0:
108  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
109  LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
110  }
111  } else {
112  info = -1;
113  LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
114  }
115  return info;
116 }
#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
void LAPACKE_stb_trans(int matrix_layout, char uplo, char diag, lapack_int n, lapack_int kd, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#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
void LAPACK_stbrfs(char *uplo, char *trans, char *diag, lapack_int *n, lapack_int *kd, lapack_int *nrhs, const float *ab, lapack_int *ldab, const float *b, lapack_int *ldb, const float *x, lapack_int *ldx, float *ferr, float *berr, float *work, lapack_int *iwork, lapack_int *info)
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