LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dtgevc()

lapack_int LAPACKE_dtgevc ( int  matrix_layout,
char  side,
char  howmny,
const lapack_logical select,
lapack_int  n,
const double *  s,
lapack_int  lds,
const double *  p,
lapack_int  ldp,
double *  vl,
lapack_int  ldvl,
double *  vr,
lapack_int  ldvr,
lapack_int  mm,
lapack_int m 
)

Definition at line 36 of file lapacke_dtgevc.c.

42 {
43  lapack_int info = 0;
44  double* work = NULL;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_dtgevc", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_dge_nancheck( matrix_layout, n, n, p, ldp ) ) {
53  return -8;
54  }
55  if( LAPACKE_dge_nancheck( matrix_layout, n, n, s, lds ) ) {
56  return -6;
57  }
58  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
59  if( LAPACKE_dge_nancheck( matrix_layout, n, mm, vl, ldvl ) ) {
60  return -10;
61  }
62  }
63  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
64  if( LAPACKE_dge_nancheck( matrix_layout, n, mm, vr, ldvr ) ) {
65  return -12;
66  }
67  }
68  }
69 #endif
70  /* Allocate memory for working array(s) */
71  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,6*n) );
72  if( work == NULL ) {
74  goto exit_level_0;
75  }
76  /* Call middle-level interface */
77  info = LAPACKE_dtgevc_work( matrix_layout, side, howmny, select, n, s, lds,
78  p, ldp, vl, ldvl, vr, ldvr, mm, m, work );
79  /* Release memory and exit */
80  LAPACKE_free( work );
81 exit_level_0:
82  if( info == LAPACK_WORK_MEMORY_ERROR ) {
83  LAPACKE_xerbla( "LAPACKE_dtgevc", info );
84  }
85  return info;
86 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
lapack_int LAPACKE_dtgevc_work(int matrix_layout, char side, char howmny, const lapack_logical *select, lapack_int n, const double *s, lapack_int lds, const double *p, lapack_int ldp, double *vl, lapack_int ldvl, double *vr, lapack_int ldvr, lapack_int mm, lapack_int *m, double *work)
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#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
int LAPACKE_get_nancheck()
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