LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_chbgvd_work()

lapack_int LAPACKE_chbgvd_work ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
lapack_complex_float ab,
lapack_int  ldab,
lapack_complex_float bb,
lapack_int  ldbb,
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_chbgvd_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_chbgvd( &jobz, &uplo, &n, &ka, &kb, ab, &ldab, bb, &ldbb, w, z,
49  &ldz, work, &lwork, rwork, &lrwork, iwork, &liwork,
50  &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  lapack_int ldab_t = MAX(1,ka+1);
56  lapack_int ldbb_t = MAX(1,kb+1);
57  lapack_int ldz_t = MAX(1,n);
58  lapack_complex_float* ab_t = NULL;
59  lapack_complex_float* bb_t = NULL;
60  lapack_complex_float* z_t = NULL;
61  /* Check leading dimension(s) */
62  if( ldab < n ) {
63  info = -8;
64  LAPACKE_xerbla( "LAPACKE_chbgvd_work", info );
65  return info;
66  }
67  if( ldbb < n ) {
68  info = -10;
69  LAPACKE_xerbla( "LAPACKE_chbgvd_work", info );
70  return info;
71  }
72  if( ldz < n ) {
73  info = -13;
74  LAPACKE_xerbla( "LAPACKE_chbgvd_work", info );
75  return info;
76  }
77  /* Query optimal working array(s) size if requested */
78  if( liwork == -1 || lrwork == -1 || lwork == -1 ) {
79  LAPACK_chbgvd( &jobz, &uplo, &n, &ka, &kb, ab, &ldab_t, bb, &ldbb_t,
80  w, z, &ldz_t, work, &lwork, rwork, &lrwork, iwork,
81  &liwork, &info );
82  return (info < 0) ? (info - 1) : info;
83  }
84  /* Allocate memory for temporary array(s) */
85  ab_t = (lapack_complex_float*)
86  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
87  if( ab_t == NULL ) {
89  goto exit_level_0;
90  }
91  bb_t = (lapack_complex_float*)
92  LAPACKE_malloc( sizeof(lapack_complex_float) * ldbb_t * MAX(1,n) );
93  if( bb_t == NULL ) {
95  goto exit_level_1;
96  }
97  if( LAPACKE_lsame( jobz, 'v' ) ) {
98  z_t = (lapack_complex_float*)
100  ldz_t * MAX(1,n) );
101  if( z_t == NULL ) {
103  goto exit_level_2;
104  }
105  }
106  /* Transpose input matrices */
107  LAPACKE_chb_trans( matrix_layout, uplo, n, ka, ab, ldab, ab_t, ldab_t );
108  LAPACKE_chb_trans( matrix_layout, uplo, n, kb, bb, ldbb, bb_t, ldbb_t );
109  /* Call LAPACK function and adjust info */
110  LAPACK_chbgvd( &jobz, &uplo, &n, &ka, &kb, ab_t, &ldab_t, bb_t, &ldbb_t,
111  w, z_t, &ldz_t, work, &lwork, rwork, &lrwork, iwork,
112  &liwork, &info );
113  if( info < 0 ) {
114  info = info - 1;
115  }
116  /* Transpose output matrices */
117  LAPACKE_chb_trans( LAPACK_COL_MAJOR, uplo, n, ka, ab_t, ldab_t, ab,
118  ldab );
119  LAPACKE_chb_trans( LAPACK_COL_MAJOR, uplo, n, kb, bb_t, ldbb_t, bb,
120  ldbb );
121  if( LAPACKE_lsame( jobz, 'v' ) ) {
122  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
123  }
124  /* Release memory and exit */
125  if( LAPACKE_lsame( jobz, 'v' ) ) {
126  LAPACKE_free( z_t );
127  }
128 exit_level_2:
129  LAPACKE_free( bb_t );
130 exit_level_1:
131  LAPACKE_free( ab_t );
132 exit_level_0:
133  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
134  LAPACKE_xerbla( "LAPACKE_chbgvd_work", info );
135  }
136  } else {
137  info = -1;
138  LAPACKE_xerbla( "LAPACKE_chbgvd_work", info );
139  }
140  return info;
141 }
#define LAPACK_chbgvd(...)
Definition: lapack.h:6483
#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_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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