LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zunmqr_work()

lapack_int LAPACKE_zunmqr_work ( int  matrix_layout,
char  side,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  k,
const lapack_complex_double a,
lapack_int  lda,
const lapack_complex_double tau,
lapack_complex_double c,
lapack_int  ldc,
lapack_complex_double work,
lapack_int  lwork 
)

Definition at line 35 of file lapacke_zunmqr_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_zunmqr( &side, &trans, &m, &n, &k, a, &lda, tau, c, &ldc, work,
46  &lwork, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int r = LAPACKE_lsame( side, 'l' ) ? m : n;
52  lapack_int lda_t = MAX(1,r);
53  lapack_int ldc_t = MAX(1,m);
54  lapack_complex_double* a_t = NULL;
55  lapack_complex_double* c_t = NULL;
56  /* Check leading dimension(s) */
57  if( lda < k ) {
58  info = -8;
59  LAPACKE_xerbla( "LAPACKE_zunmqr_work", info );
60  return info;
61  }
62  if( ldc < n ) {
63  info = -11;
64  LAPACKE_xerbla( "LAPACKE_zunmqr_work", info );
65  return info;
66  }
67  /* Query optimal working array(s) size if requested */
68  if( lwork == -1 ) {
69  LAPACK_zunmqr( &side, &trans, &m, &n, &k, a, &lda_t, tau, c, &ldc_t,
70  work, &lwork, &info );
71  return (info < 0) ? (info - 1) : info;
72  }
73  /* Allocate memory for temporary array(s) */
74  a_t = (lapack_complex_double*)
75  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,k) );
76  if( a_t == NULL ) {
78  goto exit_level_0;
79  }
80  c_t = (lapack_complex_double*)
81  LAPACKE_malloc( sizeof(lapack_complex_double) * ldc_t * MAX(1,n) );
82  if( c_t == NULL ) {
84  goto exit_level_1;
85  }
86  /* Transpose input matrices */
87  LAPACKE_zge_trans( matrix_layout, r, k, a, lda, a_t, lda_t );
88  LAPACKE_zge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
89  /* Call LAPACK function and adjust info */
90  LAPACK_zunmqr( &side, &trans, &m, &n, &k, a_t, &lda_t, tau, c_t, &ldc_t,
91  work, &lwork, &info );
92  if( info < 0 ) {
93  info = info - 1;
94  }
95  /* Transpose output matrices */
96  LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
97  /* Release memory and exit */
98  LAPACKE_free( c_t );
99 exit_level_1:
100  LAPACKE_free( a_t );
101 exit_level_0:
102  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
103  LAPACKE_xerbla( "LAPACKE_zunmqr_work", info );
104  }
105  } else {
106  info = -1;
107  LAPACKE_xerbla( "LAPACKE_zunmqr_work", info );
108  }
109  return info;
110 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_zunmqr(...)
Definition: lapack.h:22798
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
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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