LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zlantr_work()

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

Definition at line 36 of file lapacke_zlantr_work.c.

40 {
41  lapack_int info = 0;
42  double res = 0.;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  res = LAPACK_zlantr( &norm, &uplo, &diag, &m, &n, a, &lda, work );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int lda_t = MAX(1,m);
51  lapack_complex_double* a_t = NULL;
52  /* Check leading dimension(s) */
53  if( lda < n ) {
54  info = -8;
55  LAPACKE_xerbla( "LAPACKE_zlantr_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,MAX(m,n)) );
61  if( a_t == NULL ) {
63  goto exit_level_0;
64  }
65  /* Transpose input matrices */
66  LAPACKE_ztr_trans( matrix_layout, uplo, diag, MAX(m,n), a, lda, a_t, lda_t );
67  /* Call LAPACK function and adjust info */
68  res = LAPACK_zlantr( &norm, &uplo, &diag, &m, &n, a_t, &lda_t, work );
69  info = 0; /* LAPACK call is ok! */
70  /* Release memory and exit */
71  LAPACKE_free( a_t );
72 exit_level_0:
73  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
74  LAPACKE_xerbla( "LAPACKE_zlantr_work", info );
75  }
76  } else {
77  info = -1;
78  LAPACKE_xerbla( "LAPACKE_zlantr_work", info );
79  }
80  return res;
81 }
double LAPACK_zlantr(char *norm, char *uplo, char *diag, lapack_int *m, 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
void LAPACKE_ztr_trans(int matrix_layout, char uplo, char diag, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#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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