LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_claswp_work()

lapack_int LAPACKE_claswp_work ( int  matrix_layout,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_int  k1,
lapack_int  k2,
const lapack_int ipiv,
lapack_int  incx 
)

Definition at line 36 of file lapacke_claswp_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_claswp( &n, a, &lda, &k1, &k2, ipiv, &incx );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int lda_t = MAX(1,k2);
50  lapack_int i;
51  for( i = k1; i <= k2; i++ ) {
52  lda_t = MAX( lda_t, ipiv[k1 + ( i - k1 ) * ABS( incx ) - 1] );
53  }
54  lapack_complex_float* a_t = NULL;
55  /* Check leading dimension(s) */
56  if( lda < n ) {
57  info = -4;
58  LAPACKE_xerbla( "LAPACKE_claswp_work", info );
59  return info;
60  }
61  /* Allocate memory for temporary array(s) */
62  a_t = (lapack_complex_float*)
63  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
64  if( a_t == NULL ) {
66  goto exit_level_0;
67  }
68  /* Transpose input matrices */
69  LAPACKE_cge_trans( matrix_layout, lda_t, n, a, lda, a_t, lda_t );
70  /* Call LAPACK function and adjust info */
71  LAPACK_claswp( &n, a_t, &lda_t, &k1, &k2, ipiv, &incx );
72  info = 0; /* LAPACK call is ok! */
73  /* Transpose output matrices */
74  LAPACKE_cge_trans( LAPACK_COL_MAJOR, lda_t, n, a_t, lda_t, a, lda );
75  /* Release memory and exit */
76  LAPACKE_free( a_t );
77 exit_level_0:
78  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
79  LAPACKE_xerbla( "LAPACKE_claswp_work", info );
80  }
81  } else {
82  info = -1;
83  LAPACKE_xerbla( "LAPACKE_claswp_work", info );
84  }
85  return info;
86 }
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
#define ABS(x)
Definition: lapacke_utils.h:44
#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)
void LAPACK_claswp(lapack_int *n, lapack_complex_float *a, lapack_int *lda, lapack_int *k1, lapack_int *k2, const lapack_int *ipiv, lapack_int *incx)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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