LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zhpgst_work()

lapack_int LAPACKE_zhpgst_work ( int  matrix_layout,
lapack_int  itype,
char  uplo,
lapack_int  n,
lapack_complex_double ap,
const lapack_complex_double bp 
)

Definition at line 36 of file lapacke_zhpgst_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_zhpgst( &itype, &uplo, &n, ap, bp, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_complex_double* ap_t = NULL;
49  lapack_complex_double* bp_t = NULL;
50  /* Allocate memory for temporary array(s) */
51  ap_t = (lapack_complex_double*)
53  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
54  if( ap_t == NULL ) {
56  goto exit_level_0;
57  }
58  bp_t = (lapack_complex_double*)
60  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
61  if( bp_t == NULL ) {
63  goto exit_level_1;
64  }
65  /* Transpose input matrices */
66  LAPACKE_zhp_trans( matrix_layout, uplo, n, ap, ap_t );
67  LAPACKE_zhp_trans( matrix_layout, uplo, n, bp, bp_t );
68  /* Call LAPACK function and adjust info */
69  LAPACK_zhpgst( &itype, &uplo, &n, ap_t, bp_t, &info );
70  if( info < 0 ) {
71  info = info - 1;
72  }
73  /* Transpose output matrices */
74  LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
75  /* Release memory and exit */
76  LAPACKE_free( bp_t );
77 exit_level_1:
78  LAPACKE_free( ap_t );
79 exit_level_0:
80  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
81  LAPACKE_xerbla( "LAPACKE_zhpgst_work", info );
82  }
83  } else {
84  info = -1;
85  LAPACKE_xerbla( "LAPACKE_zhpgst_work", info );
86  }
87  return info;
88 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
void LAPACKE_zhp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_complex_double *out)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_zhpgst(lapack_int *itype, char *uplo, lapack_int *n, lapack_complex_double *ap, const lapack_complex_double *bp, lapack_int *info)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
Here is the call graph for this function:
Here is the caller graph for this function: