LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cstein_work()

lapack_int LAPACKE_cstein_work ( int  matrix_layout,
lapack_int  n,
const float *  d,
const float *  e,
lapack_int  m,
const float *  w,
const lapack_int iblock,
const lapack_int isplit,
lapack_complex_float z,
lapack_int  ldz,
float *  work,
lapack_int iwork,
lapack_int ifailv 
)

Definition at line 35 of file lapacke_cstein_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_cstein( &n, d, e, &m, w, iblock, isplit, z, &ldz, work, iwork,
47  ifailv, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldz_t = MAX(1,n);
53  lapack_complex_float* z_t = NULL;
54  /* Check leading dimension(s) */
55  if( ldz < m ) {
56  info = -10;
57  LAPACKE_xerbla( "LAPACKE_cstein_work", info );
58  return info;
59  }
60  /* Allocate memory for temporary array(s) */
61  z_t = (lapack_complex_float*)
62  LAPACKE_malloc( sizeof(lapack_complex_float) * ldz_t * MAX(1,m) );
63  if( z_t == NULL ) {
65  goto exit_level_0;
66  }
67  /* Call LAPACK function and adjust info */
68  LAPACK_cstein( &n, d, e, &m, w, iblock, isplit, z_t, &ldz_t, work,
69  iwork, ifailv, &info );
70  if( info < 0 ) {
71  info = info - 1;
72  }
73  /* Transpose output matrices */
74  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, m, z_t, ldz_t, z, ldz );
75  /* Release memory and exit */
76  LAPACKE_free( z_t );
77 exit_level_0:
78  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
79  LAPACKE_xerbla( "LAPACKE_cstein_work", info );
80  }
81  } else {
82  info = -1;
83  LAPACKE_xerbla( "LAPACKE_cstein_work", info );
84  }
85  return info;
86 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
void LAPACK_cstein(lapack_int const *n, float const *D, float const *E, lapack_int const *m, float const *W, lapack_int const *IBLOCK, lapack_int const *ISPLIT, lapack_complex_float *Z, lapack_int const *ldz, float *work, lapack_int *iwork, lapack_int *IFAIL, lapack_int *info)
#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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
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