LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dstev()

lapack_int LAPACKE_dstev ( int  matrix_layout,
char  jobz,
lapack_int  n,
double *  d,
double *  e,
double *  z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_dstev.c.

38 {
39  lapack_int info = 0;
40  double* work = NULL;
41  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
42  LAPACKE_xerbla( "LAPACKE_dstev", -1 );
43  return -1;
44  }
45 #ifndef LAPACK_DISABLE_NAN_CHECK
46  if( LAPACKE_get_nancheck() ) {
47  /* Optionally check input matrices for NaNs */
48  if( LAPACKE_d_nancheck( n, d, 1 ) ) {
49  return -4;
50  }
51  if( LAPACKE_d_nancheck( n-1, e, 1 ) ) {
52  return -5;
53  }
54  }
55 #endif
56  /* Allocate memory for working array(s) */
57  if( LAPACKE_lsame( jobz, 'v' ) ) {
58  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n-2) );
59  if( work == NULL ) {
61  goto exit_level_0;
62  }
63  }
64  /* Call middle-level interface */
65  info = LAPACKE_dstev_work( matrix_layout, jobz, n, d, e, z, ldz, work );
66  /* Release memory and exit */
67  if( LAPACKE_lsame( jobz, 'v' ) ) {
68  LAPACKE_free( work );
69  }
70 exit_level_0:
71  if( info == LAPACK_WORK_MEMORY_ERROR ) {
72  LAPACKE_xerbla( "LAPACKE_dstev", info );
73  }
74  return info;
75 }
#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
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
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
lapack_int LAPACKE_dstev_work(int matrix_layout, char jobz, lapack_int n, double *d, double *e, double *z, lapack_int ldz, double *work)
int LAPACKE_get_nancheck()
Here is the call graph for this function: