LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgbcon_work()

lapack_int LAPACKE_sgbcon_work ( int  matrix_layout,
char  norm,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
const float *  ab,
lapack_int  ldab,
const lapack_int ipiv,
float  anorm,
float *  rcond,
float *  work,
lapack_int iwork 
)

Definition at line 36 of file lapacke_sgbcon_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_sgbcon( &norm, &n, &kl, &ku, ab, &ldab, ipiv, &anorm, rcond,
46  work, iwork, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int ldab_t = MAX(1,2*kl+ku+1);
52  float* ab_t = NULL;
53  /* Check leading dimension(s) */
54  if( ldab < n ) {
55  info = -7;
56  LAPACKE_xerbla( "LAPACKE_sgbcon_work", info );
57  return info;
58  }
59  /* Allocate memory for temporary array(s) */
60  ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
61  if( ab_t == NULL ) {
63  goto exit_level_0;
64  }
65  /* Transpose input matrices */
66  LAPACKE_sgb_trans( matrix_layout, n, n, kl, kl+ku, ab, ldab, ab_t,
67  ldab_t );
68  /* Call LAPACK function and adjust info */
69  LAPACK_sgbcon( &norm, &n, &kl, &ku, ab_t, &ldab_t, ipiv, &anorm, rcond,
70  work, iwork, &info );
71  if( info < 0 ) {
72  info = info - 1;
73  }
74  /* Release memory and exit */
75  LAPACKE_free( ab_t );
76 exit_level_0:
77  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
78  LAPACKE_xerbla( "LAPACKE_sgbcon_work", info );
79  }
80  } else {
81  info = -1;
82  LAPACKE_xerbla( "LAPACKE_sgbcon_work", info );
83  }
84  return info;
85 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_sgbcon(char *norm, lapack_int *n, lapack_int *kl, lapack_int *ku, const float *ab, lapack_int *ldab, const lapack_int *ipiv, float *anorm, float *rcond, float *work, lapack_int *iwork, lapack_int *info)
#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)
void LAPACKE_sgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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