LAPACK  3.7.1
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 36 of file lapacke_cupgtr_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_cupgtr( &uplo, &n, ap, tau, q, &ldq, work, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int ldq_t = MAX(1,n);
51  lapack_complex_float* q_t = NULL;
52  lapack_complex_float* ap_t = NULL;
53  /* Check leading dimension(s) */
54  if( ldq < n ) {
55  info = -7;
56  LAPACKE_xerbla( "LAPACKE_cupgtr_work", info );
57  return info;
58  }
59  /* Allocate memory for temporary array(s) */
60  q_t = (lapack_complex_float*)
61  LAPACKE_malloc( sizeof(lapack_complex_float) * ldq_t * MAX(1,n) );
62  if( q_t == NULL ) {
64  goto exit_level_0;
65  }
66  ap_t = (lapack_complex_float*)
68  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
69  if( ap_t == NULL ) {
71  goto exit_level_1;
72  }
73  /* Transpose input matrices */
74  LAPACKE_cpp_trans( matrix_layout, uplo, n, ap, ap_t );
75  /* Call LAPACK function and adjust info */
76  LAPACK_cupgtr( &uplo, &n, ap_t, tau, q_t, &ldq_t, work, &info );
77  if( info < 0 ) {
78  info = info - 1;
79  }
80  /* Transpose output matrices */
81  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
82  /* Release memory and exit */
83  LAPACKE_free( ap_t );
84 exit_level_1:
85  LAPACKE_free( q_t );
86 exit_level_0:
87  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
88  LAPACKE_xerbla( "LAPACKE_cupgtr_work", info );
89  }
90  } else {
91  info = -1;
92  LAPACKE_xerbla( "LAPACKE_cupgtr_work", info );
93  }
94  return info;
95 }
void LAPACKE_cpp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_float *in, lapack_complex_float *out)
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
void LAPACK_cupgtr(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, 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
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