LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dsbgst()

lapack_int LAPACKE_dsbgst ( int  matrix_layout,
char  vect,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
double *  ab,
lapack_int  ldab,
const double *  bb,
lapack_int  ldbb,
double *  x,
lapack_int  ldx 
)

Definition at line 36 of file lapacke_dsbgst.c.

40 {
41  lapack_int info = 0;
42  double* work = NULL;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_dsbgst", -1 );
45  return -1;
46  }
47 #ifndef LAPACK_DISABLE_NAN_CHECK
48  if( LAPACKE_get_nancheck() ) {
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dsb_nancheck( matrix_layout, uplo, n, ka, ab, ldab ) ) {
51  return -7;
52  }
53  if( LAPACKE_dsb_nancheck( matrix_layout, uplo, n, kb, bb, ldbb ) ) {
54  return -9;
55  }
56  }
57 #endif
58  /* Allocate memory for working array(s) */
59  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
60  if( work == NULL ) {
62  goto exit_level_0;
63  }
64  /* Call middle-level interface */
65  info = LAPACKE_dsbgst_work( matrix_layout, vect, uplo, n, ka, kb, ab, ldab,
66  bb, ldbb, x, ldx, 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_dsbgst", info );
72  }
73  return info;
74 }
#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_int LAPACKE_dsbgst_work(int matrix_layout, char vect, char uplo, lapack_int n, lapack_int ka, lapack_int kb, double *ab, lapack_int ldab, const double *bb, lapack_int ldbb, double *x, lapack_int ldx, double *work)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#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_logical LAPACKE_dsb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const double *ab, lapack_int ldab)
int LAPACKE_get_nancheck()
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