LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cstegr_work()

lapack_int LAPACKE_cstegr_work ( int  matrix_layout,
char  jobz,
char  range,
lapack_int  n,
float *  d,
float *  e,
float  vl,
float  vu,
lapack_int  il,
lapack_int  iu,
float  abstol,
lapack_int m,
float *  w,
lapack_complex_float z,
lapack_int  ldz,
lapack_int isuppz,
float *  work,
lapack_int  lwork,
lapack_int iwork,
lapack_int  liwork 
)

Definition at line 35 of file lapacke_cstegr_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_cstegr( &jobz, &range, &n, d, e, &vl, &vu, &il, &iu, &abstol, m,
48  w, z, &ldz, isuppz, work, &lwork, iwork, &liwork,
49  &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int ldz_t = MAX(1,n);
55  lapack_complex_float* z_t = NULL;
56  /* Check leading dimension(s) */
57  if( ( LAPACKE_lsame( jobz, 'v' ) && ( ldz < ldz_t ) ) || ( ldz < 1 ) ) {
58  info = -15;
59  LAPACKE_xerbla( "LAPACKE_cstegr_work", info );
60  return info;
61  }
62  /* Query optimal working array(s) size if requested */
63  if( liwork == -1 || lwork == -1 ) {
64  LAPACK_cstegr( &jobz, &range, &n, d, e, &vl, &vu, &il, &iu, &abstol,
65  m, w, z, &ldz_t, isuppz, work, &lwork, iwork,
66  &liwork, &info );
67  return (info < 0) ? (info - 1) : info;
68  }
69  /* Allocate memory for temporary array(s) */
70  if( LAPACKE_lsame( jobz, 'v' ) ) {
71  /* Let be always 'n' instead of 'm' */
72  z_t = (lapack_complex_float*)
74  ldz_t * MAX(1,n) );
75  if( z_t == NULL ) {
77  goto exit_level_0;
78  }
79  }
80  /* Call LAPACK function and adjust info */
81  LAPACK_cstegr( &jobz, &range, &n, d, e, &vl, &vu, &il, &iu, &abstol, m,
82  w, z_t, &ldz_t, isuppz, work, &lwork, iwork, &liwork,
83  &info );
84  if( info < 0 ) {
85  info = info - 1;
86  }
87  /* Transpose output matrices */
88  if( LAPACKE_lsame( jobz, 'v' ) ) {
89  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, *m, z_t, ldz_t, z, ldz );
90  }
91  /* Release memory and exit */
92  if( LAPACKE_lsame( jobz, 'v' ) ) {
93  LAPACKE_free( z_t );
94  }
95 exit_level_0:
96  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
97  LAPACKE_xerbla( "LAPACKE_cstegr_work", info );
98  }
99  } else {
100  info = -1;
101  LAPACKE_xerbla( "LAPACKE_cstegr_work", info );
102  }
103  return info;
104 }
#define LAPACK_cstegr(...)
Definition: lapack.h:16222
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
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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