LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ctpttr_work()

lapack_int LAPACKE_ctpttr_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
const lapack_complex_float ap,
lapack_complex_float a,
lapack_int  lda 
)

Definition at line 36 of file lapacke_ctpttr_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_ctpttr( &uplo, &n, ap, a, &lda, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_int lda_t = MAX(1,n);
49  lapack_complex_float* a_t = NULL;
50  lapack_complex_float* ap_t = NULL;
51  /* Check leading dimension(s) */
52  if( lda < n ) {
53  info = -6;
54  LAPACKE_xerbla( "LAPACKE_ctpttr_work", info );
55  return info;
56  }
57  /* Allocate memory for temporary array(s) */
58  a_t = (lapack_complex_float*)
59  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
60  if( a_t == NULL ) {
62  goto exit_level_0;
63  }
64  ap_t = (lapack_complex_float*)
66  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
67  if( ap_t == NULL ) {
69  goto exit_level_1;
70  }
71  /* Transpose input matrices */
72  LAPACKE_cpp_trans( matrix_layout, uplo, n, ap, ap_t );
73  /* Call LAPACK function and adjust info */
74  LAPACK_ctpttr( &uplo, &n, ap_t, a_t, &lda_t, &info );
75  if( info < 0 ) {
76  info = info - 1;
77  }
78  /* Transpose output matrices */
79  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
80  /* Release memory and exit */
81  LAPACKE_free( ap_t );
82 exit_level_1:
83  LAPACKE_free( a_t );
84 exit_level_0:
85  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
86  LAPACKE_xerbla( "LAPACKE_ctpttr_work", info );
87  }
88  } else {
89  info = -1;
90  LAPACKE_xerbla( "LAPACKE_ctpttr_work", info );
91  }
92  return info;
93 }
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
#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_ctpttr(char *uplo, lapack_int *n, const lapack_complex_float *ap, lapack_complex_float *a, lapack_int *lda, lapack_int *info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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