LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_spbtrf_work()

lapack_int LAPACKE_spbtrf_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  kd,
float *  ab,
lapack_int  ldab 
)

Definition at line 35 of file lapacke_spbtrf_work.c.

37 {
38  lapack_int info = 0;
39  if( matrix_layout == LAPACK_COL_MAJOR ) {
40  /* Call LAPACK function and adjust info */
41  LAPACK_spbtrf( &uplo, &n, &kd, ab, &ldab, &info );
42  if( info < 0 ) {
43  info = info - 1;
44  }
45  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
46  lapack_int ldab_t = MAX(1,kd+1);
47  float* ab_t = NULL;
48  /* Check leading dimension(s) */
49  if( ldab < n ) {
50  info = -6;
51  LAPACKE_xerbla( "LAPACKE_spbtrf_work", info );
52  return info;
53  }
54  /* Allocate memory for temporary array(s) */
55  ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
56  if( ab_t == NULL ) {
58  goto exit_level_0;
59  }
60  /* Transpose input matrices */
61  LAPACKE_spb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
62  /* Call LAPACK function and adjust info */
63  LAPACK_spbtrf( &uplo, &n, &kd, ab_t, &ldab_t, &info );
64  if( info < 0 ) {
65  info = info - 1;
66  }
67  /* Transpose output matrices */
68  LAPACKE_spb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
69  ldab );
70  /* Release memory and exit */
71  LAPACKE_free( ab_t );
72 exit_level_0:
73  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
74  LAPACKE_xerbla( "LAPACKE_spbtrf_work", info );
75  }
76  } else {
77  info = -1;
78  LAPACKE_xerbla( "LAPACKE_spbtrf_work", info );
79  }
80  return info;
81 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_spbtrf(...)
Definition: lapack.h:12331
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_spb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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