LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cupgtr_work()

lapack_int LAPACKE_cupgtr_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
const lapack_complex_float ap,
const lapack_complex_float tau,
lapack_complex_float q,
lapack_int  ldq,
lapack_complex_float work 
)

Definition at line 35 of file lapacke_cupgtr_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_cupgtr( &uplo, &n, ap, tau, q, &ldq, work, &info );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int ldq_t = MAX(1,n);
50  lapack_complex_float* q_t = NULL;
51  lapack_complex_float* ap_t = NULL;
52  /* Check leading dimension(s) */
53  if( ldq < n ) {
54  info = -7;
55  LAPACKE_xerbla( "LAPACKE_cupgtr_work", info );
56  return info;
57  }
58  /* Allocate memory for temporary array(s) */
59  q_t = (lapack_complex_float*)
60  LAPACKE_malloc( sizeof(lapack_complex_float) * ldq_t * MAX(1,n) );
61  if( q_t == NULL ) {
63  goto exit_level_0;
64  }
65  ap_t = (lapack_complex_float*)
67  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
68  if( ap_t == NULL ) {
70  goto exit_level_1;
71  }
72  /* Transpose input matrices */
73  LAPACKE_cpp_trans( matrix_layout, uplo, n, ap, ap_t );
74  /* Call LAPACK function and adjust info */
75  LAPACK_cupgtr( &uplo, &n, ap_t, tau, q_t, &ldq_t, work, &info );
76  if( info < 0 ) {
77  info = info - 1;
78  }
79  /* Transpose output matrices */
80  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
81  /* Release memory and exit */
82  LAPACKE_free( ap_t );
83 exit_level_1:
84  LAPACKE_free( q_t );
85 exit_level_0:
86  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
87  LAPACKE_xerbla( "LAPACKE_cupgtr_work", info );
88  }
89  } else {
90  info = -1;
91  LAPACKE_xerbla( "LAPACKE_cupgtr_work", info );
92  }
93  return info;
94 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_cupgtr(...)
Definition: lapack.h:22931
#define lapack_complex_float
Definition: lapack.h:45
#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_cpp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_float *in, lapack_complex_float *out)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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)
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