LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgetrf2_work()

lapack_int LAPACKE_zgetrf2_work ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_int ipiv 
)

Definition at line 36 of file lapacke_zgetrf2_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_zgetrf2( &m, &n, a, &lda, ipiv, &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,m);
49  lapack_complex_double* a_t = NULL;
50  /* Check leading dimension(s) */
51  if( lda < n ) {
52  info = -5;
53  LAPACKE_xerbla( "LAPACKE_zgetrf2_work", info );
54  return info;
55  }
56  /* Allocate memory for temporary array(s) */
57  a_t = (lapack_complex_double*)
58  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
59  if( a_t == NULL ) {
61  goto exit_level_0;
62  }
63  /* Transpose input matrices */
64  LAPACKE_zge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
65  /* Call LAPACK function and adjust info */
66  LAPACK_zgetrf2( &m, &n, a_t, &lda_t, ipiv, &info );
67  if( info < 0 ) {
68  info = info - 1;
69  }
70  /* Transpose output matrices */
71  LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, 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_zgetrf2_work", info );
77  }
78  } else {
79  info = -1;
80  LAPACKE_xerbla( "LAPACKE_zgetrf2_work", info );
81  }
82  return info;
83 }
#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 LAPACK_zgetrf2(lapack_int *m, lapack_int *n, lapack_complex_double *a, lapack_int *lda, lapack_int *ipiv, 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_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
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