LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zhpgvx_work()

lapack_int LAPACKE_zhpgvx_work ( int  matrix_layout,
lapack_int  itype,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
lapack_complex_double ap,
lapack_complex_double bp,
double  vl,
double  vu,
lapack_int  il,
lapack_int  iu,
double  abstol,
lapack_int m,
double *  w,
lapack_complex_double z,
lapack_int  ldz,
lapack_complex_double work,
double *  rwork,
lapack_int iwork,
lapack_int ifail 
)

Definition at line 36 of file lapacke_zhpgvx_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zhpgvx( &itype, &jobz, &range, &uplo, &n, ap, bp, &vl, &vu, &il,
50  &iu, &abstol, m, w, z, &ldz, work, rwork, iwork, ifail,
51  &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int ncols_z = ( LAPACKE_lsame( range, 'a' ) ||
57  LAPACKE_lsame( range, 'v' ) ) ? n :
58  ( LAPACKE_lsame( range, 'i' ) ? (iu-il+1) : 1);
59  lapack_int ldz_t = MAX(1,n);
60  lapack_complex_double* z_t = NULL;
61  lapack_complex_double* ap_t = NULL;
62  lapack_complex_double* bp_t = NULL;
63  /* Check leading dimension(s) */
64  if( ldz < ncols_z ) {
65  info = -17;
66  LAPACKE_xerbla( "LAPACKE_zhpgvx_work", info );
67  return info;
68  }
69  /* Allocate memory for temporary array(s) */
70  if( LAPACKE_lsame( jobz, 'v' ) ) {
71  z_t = (lapack_complex_double*)
73  ldz_t * MAX(1,ncols_z) );
74  if( z_t == NULL ) {
76  goto exit_level_0;
77  }
78  }
79  ap_t = (lapack_complex_double*)
81  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
82  if( ap_t == NULL ) {
84  goto exit_level_1;
85  }
86  bp_t = (lapack_complex_double*)
88  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
89  if( bp_t == NULL ) {
91  goto exit_level_2;
92  }
93  /* Transpose input matrices */
94  LAPACKE_zhp_trans( matrix_layout, uplo, n, ap, ap_t );
95  LAPACKE_zhp_trans( matrix_layout, uplo, n, bp, bp_t );
96  /* Call LAPACK function and adjust info */
97  LAPACK_zhpgvx( &itype, &jobz, &range, &uplo, &n, ap_t, bp_t, &vl, &vu,
98  &il, &iu, &abstol, m, w, z_t, &ldz_t, work, rwork, iwork,
99  ifail, &info );
100  if( info < 0 ) {
101  info = info - 1;
102  }
103  /* Transpose output matrices */
104  if( LAPACKE_lsame( jobz, 'v' ) ) {
105  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, ncols_z, z_t, ldz_t, z,
106  ldz );
107  }
108  LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
109  LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, bp_t, bp );
110  /* Release memory and exit */
111  LAPACKE_free( bp_t );
112 exit_level_2:
113  LAPACKE_free( ap_t );
114 exit_level_1:
115  if( LAPACKE_lsame( jobz, 'v' ) ) {
116  LAPACKE_free( z_t );
117  }
118 exit_level_0:
119  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
120  LAPACKE_xerbla( "LAPACKE_zhpgvx_work", info );
121  }
122  } else {
123  info = -1;
124  LAPACKE_xerbla( "LAPACKE_zhpgvx_work", info );
125  }
126  return info;
127 }
void LAPACK_zhpgvx(lapack_int *itype, char *jobz, char *range, char *uplo, lapack_int *n, lapack_complex_double *ap, lapack_complex_double *bp, double *vl, double *vu, lapack_int *il, lapack_int *iu, double *abstol, lapack_int *m, double *w, lapack_complex_double *z, lapack_int *ldz, lapack_complex_double *work, double *rwork, lapack_int *iwork, lapack_int *ifail, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
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:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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)
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