LAPACK  3.10.0
LAPACK: Linear Algebra PACKage
lapacke_dggesx.c
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28 *****************************************************************************
29 * Contents: Native high-level C interface to LAPACK function dggesx
30 * Author: Intel Corporation
31 *****************************************************************************/
32 
33 #include "lapacke_utils.h"
34 
35 lapack_int LAPACKE_dggesx( int matrix_layout, char jobvsl, char jobvsr,
36  char sort, LAPACK_D_SELECT3 selctg, char sense,
37  lapack_int n, double* a, lapack_int lda, double* b,
38  lapack_int ldb, lapack_int* sdim, double* alphar,
39  double* alphai, double* beta, double* vsl,
40  lapack_int ldvsl, double* vsr, lapack_int ldvsr,
41  double* rconde, double* rcondv )
42 {
43  lapack_int info = 0;
44  lapack_int liwork = -1;
45  lapack_int lwork = -1;
46  lapack_logical* bwork = NULL;
47  lapack_int* iwork = NULL;
48  double* work = NULL;
49  lapack_int iwork_query;
50  double work_query;
51  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
52  LAPACKE_xerbla( "LAPACKE_dggesx", -1 );
53  return -1;
54  }
55 #ifndef LAPACK_DISABLE_NAN_CHECK
56  if( LAPACKE_get_nancheck() ) {
57  /* Optionally check input matrices for NaNs */
58  if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
59  return -8;
60  }
61  if( LAPACKE_dge_nancheck( matrix_layout, n, n, b, ldb ) ) {
62  return -10;
63  }
64  }
65 #endif
66  /* Allocate memory for working array(s) */
67  if( LAPACKE_lsame( sort, 's' ) ) {
68  bwork = (lapack_logical*)
69  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
70  if( bwork == NULL ) {
72  goto exit_level_0;
73  }
74  }
75  /* Query optimal working array(s) size */
76  info = LAPACKE_dggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
77  sense, n, a, lda, b, ldb, sdim, alphar, alphai,
78  beta, vsl, ldvsl, vsr, ldvsr, rconde, rcondv,
79  &work_query, lwork, &iwork_query, liwork,
80  bwork );
81  if( info != 0 ) {
82  goto exit_level_1;
83  }
84  liwork = iwork_query;
85  lwork = (lapack_int)work_query;
86  /* Allocate memory for work arrays */
87  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
88  if( iwork == NULL ) {
90  goto exit_level_1;
91  }
92  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
93  if( work == NULL ) {
95  goto exit_level_2;
96  }
97  /* Call middle-level interface */
98  info = LAPACKE_dggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
99  sense, n, a, lda, b, ldb, sdim, alphar, alphai,
100  beta, vsl, ldvsl, vsr, ldvsr, rconde, rcondv,
101  work, lwork, iwork, liwork, bwork );
102  /* Release memory and exit */
103  LAPACKE_free( work );
104 exit_level_2:
105  LAPACKE_free( iwork );
106 exit_level_1:
107  if( LAPACKE_lsame( sort, 's' ) ) {
108  LAPACKE_free( bwork );
109  }
110 exit_level_0:
111  if( info == LAPACK_WORK_MEMORY_ERROR ) {
112  LAPACKE_xerbla( "LAPACKE_dggesx", info );
113  }
114  return info;
115 }
lapack_logical(* LAPACK_D_SELECT3)(const double *, const double *, const double *)
Definition: lapack.h:108
#define lapack_int
Definition: lapack.h:83
#define lapack_logical
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
lapack_int LAPACKE_dggesx_work(int matrix_layout, char jobvsl, char jobvsr, char sort, LAPACK_D_SELECT3 selctg, char sense, lapack_int n, double *a, lapack_int lda, double *b, lapack_int ldb, lapack_int *sdim, double *alphar, double *alphai, double *beta, double *vsl, lapack_int ldvsl, double *vsr, lapack_int ldvsr, double *rconde, double *rcondv, double *work, lapack_int lwork, lapack_int *iwork, lapack_int liwork, lapack_logical *bwork)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_int LAPACKE_dggesx(int matrix_layout, char jobvsl, char jobvsr, char sort, LAPACK_D_SELECT3 selctg, char sense, lapack_int n, double *a, lapack_int lda, double *b, lapack_int ldb, lapack_int *sdim, double *alphar, double *alphai, double *beta, double *vsl, lapack_int ldvsl, double *vsr, lapack_int ldvsr, double *rconde, double *rcondv)
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
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)