LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sstev()

lapack_int LAPACKE_sstev ( int  matrix_layout,
char  jobz,
lapack_int  n,
float *  d,
float *  e,
float *  z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_sstev.c.

38 {
39  lapack_int info = 0;
40  float* work = NULL;
41  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
42  LAPACKE_xerbla( "LAPACKE_sstev", -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_s_nancheck( n, d, 1 ) ) {
49  return -4;
50  }
51  if( LAPACKE_s_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 = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n-2) );
59  if( work == NULL ) {
61  goto exit_level_0;
62  }
63  }
64  /* Call middle-level interface */
65  info = LAPACKE_sstev_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_sstev", 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
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
lapack_int LAPACKE_sstev_work(int matrix_layout, char jobz, lapack_int n, float *d, float *e, float *z, lapack_int ldz, float *work)
#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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