LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zhetrf_work()

lapack_int LAPACKE_zhetrf_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_int ipiv,
lapack_complex_double work,
lapack_int  lwork 
)

Definition at line 35 of file lapacke_zhetrf_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_zhetrf( &uplo, &n, a, &lda, ipiv, work, &lwork, &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  lapack_complex_double* a_t = NULL;
50  /* Check leading dimension(s) */
51  if( lda < n ) {
52  info = -5;
53  LAPACKE_xerbla( "LAPACKE_zhetrf_work", info );
54  return info;
55  }
56  /* Query optimal working array(s) size if requested */
57  if( lwork == -1 ) {
58  LAPACK_zhetrf( &uplo, &n, a, &lda_t, ipiv, work, &lwork, &info );
59  return (info < 0) ? (info - 1) : info;
60  }
61  /* Allocate memory for temporary array(s) */
62  a_t = (lapack_complex_double*)
63  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
64  if( a_t == NULL ) {
66  goto exit_level_0;
67  }
68  /* Transpose input matrices */
69  LAPACKE_zhe_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
70  /* Call LAPACK function and adjust info */
71  LAPACK_zhetrf( &uplo, &n, a_t, &lda_t, ipiv, work, &lwork, &info );
72  if( info < 0 ) {
73  info = info - 1;
74  }
75  /* Transpose output matrices */
76  LAPACKE_zhe_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
77  /* Release memory and exit */
78  LAPACKE_free( a_t );
79 exit_level_0:
80  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
81  LAPACKE_xerbla( "LAPACKE_zhetrf_work", info );
82  }
83  } else {
84  info = -1;
85  LAPACKE_xerbla( "LAPACKE_zhetrf_work", info );
86  }
87  return info;
88 }
#define LAPACK_zhetrf(...)
Definition: lapack.h:7805
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_double
Definition: lapack.h:63
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zhe_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 MAX(x, y)
Definition: lapacke_utils.h:46
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