LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zhbgv_work()

lapack_int LAPACKE_zhbgv_work ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
lapack_complex_double ab,
lapack_int  ldab,
lapack_complex_double bb,
lapack_int  ldbb,
double *  w,
lapack_complex_double z,
lapack_int  ldz,
lapack_complex_double work,
double *  rwork 
)

Definition at line 35 of file lapacke_zhbgv_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_zhbgv( &jobz, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb, w, z,
47  &ldz, work, rwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldab_t = MAX(1,ka+1);
53  lapack_int ldbb_t = MAX(1,kb+1);
54  lapack_int ldz_t = MAX(1,n);
55  lapack_complex_double* ab_t = NULL;
56  lapack_complex_double* bb_t = NULL;
57  lapack_complex_double* z_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldab < n ) {
60  info = -8;
61  LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
62  return info;
63  }
64  if( ldbb < n ) {
65  info = -10;
66  LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
67  return info;
68  }
69  if( ldz < n ) {
70  info = -13;
71  LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
72  return info;
73  }
74  /* Allocate memory for temporary array(s) */
75  ab_t = (lapack_complex_double*)
76  LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
77  if( ab_t == NULL ) {
79  goto exit_level_0;
80  }
81  bb_t = (lapack_complex_double*)
82  LAPACKE_malloc( sizeof(lapack_complex_double) * ldbb_t * MAX(1,n) );
83  if( bb_t == NULL ) {
85  goto exit_level_1;
86  }
87  if( LAPACKE_lsame( jobz, 'v' ) ) {
88  z_t = (lapack_complex_double*)
90  ldz_t * MAX(1,n) );
91  if( z_t == NULL ) {
93  goto exit_level_2;
94  }
95  }
96  /* Transpose input matrices */
97  LAPACKE_zhb_trans( matrix_layout, uplo, n, ka, ab, ldab, ab_t, ldab_t );
98  LAPACKE_zhb_trans( matrix_layout, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
99  /* Call LAPACK function and adjust info */
100  LAPACK_zhbgv( &jobz, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t, &ldbb_t,
101  w, z_t, &ldz_t, work, rwork, &info );
102  if( info < 0 ) {
103  info = info - 1;
104  }
105  /* Transpose output matrices */
106  LAPACKE_zhb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
107  ldab );
108  LAPACKE_zhb_trans( LAPACK_COL_MAJOR, uplo, n, kb, bb_t, ldbb_t, bb,
109  ldbb );
110  if( LAPACKE_lsame( jobz, 'v' ) ) {
111  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
112  }
113  /* Release memory and exit */
114  if( LAPACKE_lsame( jobz, 'v' ) ) {
115  LAPACKE_free( z_t );
116  }
117 exit_level_2:
118  LAPACKE_free( bb_t );
119 exit_level_1:
120  LAPACKE_free( ab_t );
121 exit_level_0:
122  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
123  LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
124  }
125  } else {
126  info = -1;
127  LAPACKE_xerbla( "LAPACKE_zhbgv_work", info );
128  }
129  return info;
130 }
#define LAPACK_zhbgv(...)
Definition: lapack.h:6461
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_double
Definition: lapack.h:63
#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)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_zhb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
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