LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_chbevd_work()

lapack_int LAPACKE_chbevd_work ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_int  kd,
lapack_complex_float ab,
lapack_int  ldab,
float *  w,
lapack_complex_float z,
lapack_int  ldz,
lapack_complex_float work,
lapack_int  lwork,
float *  rwork,
lapack_int  lrwork,
lapack_int iwork,
lapack_int  liwork 
)

Definition at line 35 of file lapacke_chbevd_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_chbevd( &jobz, &uplo, &n, &kd, ab, &ldab, w, z, &ldz, work,
48  &lwork, rwork, &lrwork, iwork, &liwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int ldab_t = MAX(1,kd+1);
54  lapack_int ldz_t = MAX(1,n);
55  lapack_complex_float* ab_t = NULL;
56  lapack_complex_float* z_t = NULL;
57  /* Check leading dimension(s) */
58  if( ldab < n ) {
59  info = -7;
60  LAPACKE_xerbla( "LAPACKE_chbevd_work", info );
61  return info;
62  }
63  if( ldz < n ) {
64  info = -10;
65  LAPACKE_xerbla( "LAPACKE_chbevd_work", info );
66  return info;
67  }
68  /* Query optimal working array(s) size if requested */
69  if( liwork == -1 || lrwork == -1 || lwork == -1 ) {
70  LAPACK_chbevd( &jobz, &uplo, &n, &kd, ab, &ldab_t, w, z, &ldz_t,
71  work, &lwork, rwork, &lrwork, iwork, &liwork,
72  &info );
73  return (info < 0) ? (info - 1) : info;
74  }
75  /* Allocate memory for temporary array(s) */
76  ab_t = (lapack_complex_float*)
77  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
78  if( ab_t == NULL ) {
80  goto exit_level_0;
81  }
82  if( LAPACKE_lsame( jobz, 'v' ) ) {
83  z_t = (lapack_complex_float*)
85  ldz_t * MAX(1,n) );
86  if( z_t == NULL ) {
88  goto exit_level_1;
89  }
90  }
91  /* Transpose input matrices */
92  LAPACKE_chb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
93  /* Call LAPACK function and adjust info */
94  LAPACK_chbevd( &jobz, &uplo, &n, &kd, ab_t, &ldab_t, w, z_t, &ldz_t,
95  work, &lwork, rwork, &lrwork, iwork, &liwork, &info );
96  if( info < 0 ) {
97  info = info - 1;
98  }
99  /* Transpose output matrices */
100  LAPACKE_chb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
101  ldab );
102  if( LAPACKE_lsame( jobz, 'v' ) ) {
103  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
104  }
105  /* Release memory and exit */
106  if( LAPACKE_lsame( jobz, 'v' ) ) {
107  LAPACKE_free( z_t );
108  }
109 exit_level_1:
110  LAPACKE_free( ab_t );
111 exit_level_0:
112  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
113  LAPACKE_xerbla( "LAPACKE_chbevd_work", info );
114  }
115  } else {
116  info = -1;
117  LAPACKE_xerbla( "LAPACKE_chbevd_work", info );
118  }
119  return info;
120 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_chbevd(...)
Definition: lapack.h:6216
#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_chb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
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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