LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dtrsna()

lapack_int LAPACKE_dtrsna ( int  matrix_layout,
char  job,
char  howmny,
const lapack_logical select,
lapack_int  n,
const double *  t,
lapack_int  ldt,
const double *  vl,
lapack_int  ldvl,
const double *  vr,
lapack_int  ldvr,
double *  s,
double *  sep,
lapack_int  mm,
lapack_int m 
)

Definition at line 36 of file lapacke_dtrsna.c.

42 {
43  lapack_int info = 0;
44  lapack_int ldwork = LAPACKE_lsame( job, 'e' ) ? 1 : MAX(1,n) ;
45  lapack_int* iwork = NULL;
46  double* work = NULL;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_dtrsna", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  /* Optionally check input matrices for NaNs */
53  if( LAPACKE_dge_nancheck( matrix_layout, n, n, t, ldt ) ) {
54  return -6;
55  }
56  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
57  if( LAPACKE_dge_nancheck( matrix_layout, n, mm, vl, ldvl ) ) {
58  return -8;
59  }
60  }
61  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
62  if( LAPACKE_dge_nancheck( matrix_layout, n, mm, vr, ldvr ) ) {
63  return -10;
64  }
65  }
66 #endif
67  /* Allocate memory for working array(s) */
68  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
69  iwork = (lapack_int*)
70  LAPACKE_malloc( sizeof(lapack_int) * MAX(1,2*(n-1)) );
71  if( iwork == NULL ) {
73  goto exit_level_0;
74  }
75  }
76  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
77  work = (double*)LAPACKE_malloc( sizeof(double) * ldwork * MAX(1,n+6) );
78  if( work == NULL ) {
80  goto exit_level_1;
81  }
82  }
83  /* Call middle-level interface */
84  info = LAPACKE_dtrsna_work( matrix_layout, job, howmny, select, n, t, ldt,
85  vl, ldvl, vr, ldvr, s, sep, mm, m, work, ldwork,
86  iwork );
87  /* Release memory and exit */
88  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
89  LAPACKE_free( work );
90  }
91 exit_level_1:
92  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
93  LAPACKE_free( iwork );
94  }
95 exit_level_0:
96  if( info == LAPACK_WORK_MEMORY_ERROR ) {
97  LAPACKE_xerbla( "LAPACKE_dtrsna", info );
98  }
99  return info;
100 }
lapack_int LAPACKE_dtrsna_work(int matrix_layout, char job, char howmny, const lapack_logical *select, lapack_int n, const double *t, lapack_int ldt, const double *vl, lapack_int ldvl, const double *vr, lapack_int ldvr, double *s, double *sep, lapack_int mm, lapack_int *m, double *work, lapack_int ldwork, lapack_int *iwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#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
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