LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zlansy_work()

double LAPACKE_zlansy_work ( int  matrix_layout,
char  norm,
char  uplo,
lapack_int  n,
const lapack_complex_double a,
lapack_int  lda,
double *  work 
)

Definition at line 36 of file lapacke_zlansy_work.c.

39 {
40  lapack_int info = 0;
41  double res = 0.;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  res = LAPACK_zlansy( &norm, &uplo, &n, a, &lda, work );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int lda_t = MAX(1,n);
50  lapack_complex_double* a_t = NULL;
51  /* Check leading dimension(s) */
52  if( lda < n ) {
53  info = -6;
54  LAPACKE_xerbla( "LAPACKE_zlansy_work", info );
55  return info;
56  }
57  /* Allocate memory for temporary array(s) */
58  a_t = (lapack_complex_double*)
59  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
60  if( a_t == NULL ) {
62  goto exit_level_0;
63  }
64  /* Transpose input matrices */
65  LAPACKE_zsy_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
66  /* Call LAPACK function and adjust info */
67  res = LAPACK_zlansy( &norm, &uplo, &n, a_t, &lda_t, work );
68  info = 0; /* LAPACK call is ok! */
69  /* Release memory and exit */
70  LAPACKE_free( a_t );
71 exit_level_0:
72  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
73  LAPACKE_xerbla( "LAPACKE_zlansy_work", info );
74  }
75  } else {
76  info = -1;
77  LAPACKE_xerbla( "LAPACKE_zlansy_work", info );
78  }
79  return res;
80 }
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)
double LAPACK_zlansy(char *norm, char *uplo, lapack_int *n, const lapack_complex_double *a, lapack_int *lda, double *work)
#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
#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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