LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sspgst_work()

lapack_int LAPACKE_sspgst_work ( int  matrix_layout,
lapack_int  itype,
char  uplo,
lapack_int  n,
float *  ap,
const float *  bp 
)

Definition at line 36 of file lapacke_sspgst_work.c.

38 {
39  lapack_int info = 0;
40  if( matrix_layout == LAPACK_COL_MAJOR ) {
41  /* Call LAPACK function and adjust info */
42  LAPACK_sspgst( &itype, &uplo, &n, ap, bp, &info );
43  if( info < 0 ) {
44  info = info - 1;
45  }
46  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
47  float* ap_t = NULL;
48  float* bp_t = NULL;
49  /* Allocate memory for temporary array(s) */
50  ap_t = (float*)
51  LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
52  if( ap_t == NULL ) {
54  goto exit_level_0;
55  }
56  bp_t = (float*)
57  LAPACKE_malloc( sizeof(float) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
58  if( bp_t == NULL ) {
60  goto exit_level_1;
61  }
62  /* Transpose input matrices */
63  LAPACKE_ssp_trans( matrix_layout, uplo, n, ap, ap_t );
64  LAPACKE_ssp_trans( matrix_layout, uplo, n, bp, bp_t );
65  /* Call LAPACK function and adjust info */
66  LAPACK_sspgst( &itype, &uplo, &n, ap_t, bp_t, &info );
67  if( info < 0 ) {
68  info = info - 1;
69  }
70  /* Transpose output matrices */
71  LAPACKE_ssp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
72  /* Release memory and exit */
73  LAPACKE_free( bp_t );
74 exit_level_1:
75  LAPACKE_free( ap_t );
76 exit_level_0:
77  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
78  LAPACKE_xerbla( "LAPACKE_sspgst_work", info );
79  }
80  } else {
81  info = -1;
82  LAPACKE_xerbla( "LAPACKE_sspgst_work", info );
83  }
84  return info;
85 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_ssp_trans(int matrix_layout, char uplo, lapack_int n, const float *in, float *out)
void LAPACK_sspgst(lapack_int *itype, char *uplo, lapack_int *n, float *ap, const float *bp, lapack_int *info)
#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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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