LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgetf2_work()

lapack_int LAPACKE_zgetf2_work ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_int ipiv 
)

Definition at line 35 of file lapacke_zgetf2_work.c.

38 {
39  lapack_int info = 0;
40  if( matrix_layout == LAPACK_COL_MAJOR ) {
41  /* Call LAPACK function and adjust info */
42  LAPACK_zgetf2( &m, &n, a, &lda, ipiv, &info );
43  if( info < 0 ) {
44  info = info - 1;
45  }
46  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
47  lapack_int lda_t = MAX(1,m);
48  lapack_complex_double* a_t = NULL;
49  /* Check leading dimension(s) */
50  if( lda < n ) {
51  info = -5;
52  LAPACKE_xerbla( "LAPACKE_zgetf2_work", info );
53  return info;
54  }
55  /* Allocate memory for temporary array(s) */
56  a_t = (lapack_complex_double*)
57  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
58  if( a_t == NULL ) {
60  goto exit_level_0;
61  }
62  /* Transpose input matrices */
63  LAPACKE_zge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
64  /* Call LAPACK function and adjust info */
65  LAPACK_zgetf2( &m, &n, a_t, &lda_t, ipiv, &info );
66  if( info < 0 ) {
67  info = info - 1;
68  }
69  /* Transpose output matrices */
70  LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
71  /* Release memory and exit */
72  LAPACKE_free( a_t );
73 exit_level_0:
74  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
75  LAPACKE_xerbla( "LAPACKE_zgetf2_work", info );
76  }
77  } else {
78  info = -1;
79  LAPACKE_xerbla( "LAPACKE_zgetf2_work", info );
80  }
81  return info;
82 }
#define lapack_int
Definition: lapack.h:83
void LAPACK_zgetf2(lapack_int const *m, lapack_int const *n, lapack_complex_double *A, lapack_int const *lda, lapack_int *ipiv, lapack_int *info)
#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_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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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