LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zhpgv_work()

lapack_int LAPACKE_zhpgv_work ( int  matrix_layout,
lapack_int  itype,
char  jobz,
char  uplo,
lapack_int  n,
lapack_complex_double ap,
lapack_complex_double bp,
double *  w,
lapack_complex_double z,
lapack_int  ldz,
lapack_complex_double work,
double *  rwork 
)

Definition at line 35 of file lapacke_zhpgv_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_zhpgv( &itype, &jobz, &uplo, &n, ap, bp, w, z, &ldz, work, rwork,
46  &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int ldz_t = MAX(1,n);
52  lapack_complex_double* z_t = NULL;
53  lapack_complex_double* ap_t = NULL;
54  lapack_complex_double* bp_t = NULL;
55  /* Check leading dimension(s) */
56  if( ldz < n ) {
57  info = -10;
58  LAPACKE_xerbla( "LAPACKE_zhpgv_work", info );
59  return info;
60  }
61  /* Allocate memory for temporary array(s) */
62  if( LAPACKE_lsame( jobz, 'v' ) ) {
63  z_t = (lapack_complex_double*)
65  ldz_t * MAX(1,n) );
66  if( z_t == NULL ) {
68  goto exit_level_0;
69  }
70  }
71  ap_t = (lapack_complex_double*)
73  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
74  if( ap_t == NULL ) {
76  goto exit_level_1;
77  }
78  bp_t = (lapack_complex_double*)
80  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
81  if( bp_t == NULL ) {
83  goto exit_level_2;
84  }
85  /* Transpose input matrices */
86  LAPACKE_zhp_trans( matrix_layout, uplo, n, ap, ap_t );
87  LAPACKE_zhp_trans( matrix_layout, uplo, n, bp, bp_t );
88  /* Call LAPACK function and adjust info */
89  LAPACK_zhpgv( &itype, &jobz, &uplo, &n, ap_t, bp_t, w, z_t, &ldz_t,
90  work, rwork, &info );
91  if( info < 0 ) {
92  info = info - 1;
93  }
94  /* Transpose output matrices */
95  if( LAPACKE_lsame( jobz, 'v' ) ) {
96  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
97  }
98  LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
99  LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, bp_t, bp );
100  /* Release memory and exit */
101  LAPACKE_free( bp_t );
102 exit_level_2:
103  LAPACKE_free( ap_t );
104 exit_level_1:
105  if( LAPACKE_lsame( jobz, 'v' ) ) {
106  LAPACKE_free( z_t );
107  }
108 exit_level_0:
109  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
110  LAPACKE_xerbla( "LAPACKE_zhpgv_work", info );
111  }
112  } else {
113  info = -1;
114  LAPACKE_xerbla( "LAPACKE_zhpgv_work", info );
115  }
116  return info;
117 }
#define LAPACK_zhpgv(...)
Definition: lapack.h:8667
#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)
void LAPACKE_zhp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_complex_double *out)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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