LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dtrttf_work()

lapack_int LAPACKE_dtrttf_work ( int  matrix_layout,
char  transr,
char  uplo,
lapack_int  n,
const double *  a,
lapack_int  lda,
double *  arf 
)

Definition at line 36 of file lapacke_dtrttf_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_dtrttf( &transr, &uplo, &n, a, &lda, arf, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_int lda_t = MAX(1,n);
49  double* a_t = NULL;
50  double* arf_t = NULL;
51  /* Check leading dimension(s) */
52  if( lda < n ) {
53  info = -6;
54  LAPACKE_xerbla( "LAPACKE_dtrttf_work", info );
55  return info;
56  }
57  /* Allocate memory for temporary array(s) */
58  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
59  if( a_t == NULL ) {
61  goto exit_level_0;
62  }
63  arf_t = (double*)
64  LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
65  if( arf_t == NULL ) {
67  goto exit_level_1;
68  }
69  /* Transpose input matrices */
70  LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
71  /* Call LAPACK function and adjust info */
72  LAPACK_dtrttf( &transr, &uplo, &n, a_t, &lda_t, arf_t, &info );
73  if( info < 0 ) {
74  info = info - 1;
75  }
76  /* Transpose output matrices */
77  LAPACKE_dpf_trans( LAPACK_COL_MAJOR, transr, uplo, n, arf_t, arf );
78  /* Release memory and exit */
79  LAPACKE_free( arf_t );
80 exit_level_1:
81  LAPACKE_free( a_t );
82 exit_level_0:
83  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
84  LAPACKE_xerbla( "LAPACKE_dtrttf_work", info );
85  }
86  } else {
87  info = -1;
88  LAPACKE_xerbla( "LAPACKE_dtrttf_work", info );
89  }
90  return info;
91 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_dtrttf(char *transr, char *uplo, lapack_int *n, const double *a, lapack_int *lda, double *arf, 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
void LAPACKE_dpf_trans(int matrix_layout, char transr, char uplo, lapack_int n, const double *in, double *out)
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