LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zsyr_work()

lapack_int LAPACKE_zsyr_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_complex_double  alpha,
const lapack_complex_double x,
lapack_int  incx,
lapack_complex_double a,
lapack_int  lda 
)

Definition at line 36 of file lapacke_zsyr_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_zsyr( &uplo, &n, &alpha, x, &incx, a, &lda );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int lda_t = MAX(1,n);
51  lapack_complex_double* a_t = NULL;
52  /* Check leading dimension(s) */
53  if( lda < n ) {
54  info = -8;
55  LAPACKE_xerbla( "LAPACKE_zsyr_work", info );
56  return info;
57  }
58  /* Allocate memory for temporary array(s) */
59  a_t = (lapack_complex_double*)
60  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
61  if( a_t == NULL ) {
63  goto exit_level_0;
64  }
65  /* Transpose input matrices */
66  LAPACKE_zsy_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
67  /* Call LAPACK function and adjust info */
68  LAPACK_zsyr( &uplo, &n, &alpha, x, &incx, a_t, &lda_t );
69  info = 0; /* LAPACK call is ok! */
70  /* Transpose output matrices */
71  LAPACKE_zsy_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
72  /* Release memory and exit */
73  LAPACKE_free( a_t );
74 exit_level_0:
75  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
76  LAPACKE_xerbla( "LAPACKE_zsyr_work", info );
77  }
78  } else {
79  info = -1;
80  LAPACKE_xerbla( "LAPACKE_zsyr_work", info );
81  }
82  return info;
83 }
void LAPACKE_zsy_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_zsyr(char *uplo, lapack_int *n, lapack_complex_double *alpha, const lapack_complex_double *x, lapack_int *incx, lapack_complex_double *a, lapack_int *lda)
#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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