LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgbtrf_work()

lapack_int LAPACKE_cgbtrf_work ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_complex_float ab,
lapack_int  ldab,
lapack_int ipiv 
)

Definition at line 35 of file lapacke_cgbtrf_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_cgbtrf( &m, &n, &kl, &ku, ab, &ldab, ipiv, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_int ldab_t = MAX(1,2*kl+ku+1);
49  lapack_complex_float* ab_t = NULL;
50  /* Check leading dimension(s) */
51  if( ldab < n ) {
52  info = -7;
53  LAPACKE_xerbla( "LAPACKE_cgbtrf_work", info );
54  return info;
55  }
56  /* Allocate memory for temporary array(s) */
57  ab_t = (lapack_complex_float*)
58  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
59  if( ab_t == NULL ) {
61  goto exit_level_0;
62  }
63  /* Transpose input matrices */
64  LAPACKE_cgb_trans( matrix_layout, m, n, kl, kl+ku, ab, ldab, ab_t,
65  ldab_t );
66  /* Call LAPACK function and adjust info */
67  LAPACK_cgbtrf( &m, &n, &kl, &ku, ab_t, &ldab_t, ipiv, &info );
68  if( info < 0 ) {
69  info = info - 1;
70  }
71  /* Transpose output matrices */
72  LAPACKE_cgb_trans( LAPACK_COL_MAJOR, m, n, kl, kl+ku, ab_t, ldab_t, ab,
73  ldab );
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_cgbtrf_work", info );
79  }
80  } else {
81  info = -1;
82  LAPACKE_xerbla( "LAPACKE_cgbtrf_work", info );
83  }
84  return info;
85 }
void LAPACK_cgbtrf(lapack_int const *m, lapack_int const *n, lapack_int const *kl, lapack_int const *ku, lapack_complex_float *AB, lapack_int const *ldab, lapack_int *ipiv, lapack_int *info)
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#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_cgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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