LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ssbtrd()

lapack_int LAPACKE_ssbtrd ( int  matrix_layout,
char  vect,
char  uplo,
lapack_int  n,
lapack_int  kd,
float *  ab,
lapack_int  ldab,
float *  d,
float *  e,
float *  q,
lapack_int  ldq 
)

Definition at line 35 of file lapacke_ssbtrd.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_ssbtrd", -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_ssb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
49  return -6;
50  }
51  if( LAPACKE_lsame( vect, 'u' ) ) {
52  if( LAPACKE_sge_nancheck( matrix_layout, n, n, q, ldq ) ) {
53  return -10;
54  }
55  }
56  }
57 #endif
58  /* Allocate memory for working array(s) */
59  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
60  if( work == NULL ) {
62  goto exit_level_0;
63  }
64  /* Call middle-level interface */
65  info = LAPACKE_ssbtrd_work( matrix_layout, vect, uplo, n, kd, ab, ldab, d, e,
66  q, ldq, work );
67  /* Release memory and exit */
68  LAPACKE_free( work );
69 exit_level_0:
70  if( info == LAPACK_WORK_MEMORY_ERROR ) {
71  LAPACKE_xerbla( "LAPACKE_ssbtrd", info );
72  }
73  return info;
74 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
lapack_int LAPACKE_ssbtrd_work(int matrix_layout, char vect, char uplo, lapack_int n, lapack_int kd, float *ab, lapack_int ldab, float *d, float *e, float *q, lapack_int ldq, float *work)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_ssb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const float *ab, lapack_int ldab)
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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