LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_dtrevc ( int  matrix_layout,
char  side,
char  howmny,
lapack_logical select,
lapack_int  n,
const double *  t,
lapack_int  ldt,
double *  vl,
lapack_int  ldvl,
double *  vr,
lapack_int  ldvr,
lapack_int  mm,
lapack_int m 
)

Definition at line 36 of file lapacke_dtrevc.c.

41 {
42  lapack_int info = 0;
43  double* work = NULL;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_dtrevc", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dge_nancheck( matrix_layout, n, n, t, ldt ) ) {
51  return -6;
52  }
53  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
54  if( LAPACKE_dge_nancheck( matrix_layout, n, mm, vl, ldvl ) ) {
55  return -8;
56  }
57  }
58  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
59  if( LAPACKE_dge_nancheck( matrix_layout, n, mm, vr, ldvr ) ) {
60  return -10;
61  }
62  }
63 #endif
64  /* Allocate memory for working array(s) */
65  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
66  if( work == NULL ) {
68  goto exit_level_0;
69  }
70  /* Call middle-level interface */
71  info = LAPACKE_dtrevc_work( matrix_layout, side, howmny, select, n, t, ldt,
72  vl, ldvl, vr, ldvr, mm, m, work );
73  /* Release memory and exit */
74  LAPACKE_free( work );
75 exit_level_0:
76  if( info == LAPACK_WORK_MEMORY_ERROR ) {
77  LAPACKE_xerbla( "LAPACKE_dtrevc", info );
78  }
79  return info;
80 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
lapack_int LAPACKE_dtrevc_work(int matrix_layout, char side, char howmny, lapack_logical *select, lapack_int n, const double *t, lapack_int ldt, double *vl, lapack_int ldvl, double *vr, lapack_int ldvr, lapack_int mm, lapack_int *m, double *work)
#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_free(p)
Definition: lapacke.h:113
#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

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