LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_chptrd_work()

lapack_int LAPACKE_chptrd_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_complex_float ap,
float *  d,
float *  e,
lapack_complex_float tau 
)

Definition at line 36 of file lapacke_chptrd_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_chptrd( &uplo, &n, ap, d, e, tau, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_complex_float* ap_t = NULL;
49  /* Allocate memory for temporary array(s) */
50  ap_t = (lapack_complex_float*)
52  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
53  if( ap_t == NULL ) {
55  goto exit_level_0;
56  }
57  /* Transpose input matrices */
58  LAPACKE_chp_trans( matrix_layout, uplo, n, ap, ap_t );
59  /* Call LAPACK function and adjust info */
60  LAPACK_chptrd( &uplo, &n, ap_t, d, e, tau, &info );
61  if( info < 0 ) {
62  info = info - 1;
63  }
64  /* Transpose output matrices */
65  LAPACKE_chp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
66  /* Release memory and exit */
67  LAPACKE_free( ap_t );
68 exit_level_0:
69  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
70  LAPACKE_xerbla( "LAPACKE_chptrd_work", info );
71  }
72  } else {
73  info = -1;
74  LAPACKE_xerbla( "LAPACKE_chptrd_work", info );
75  }
76  return info;
77 }
#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 LAPACKE_chp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_float *in, lapack_complex_float *out)
void LAPACK_chptrd(char *uplo, lapack_int *n, lapack_complex_float *ap, float *d, float *e, lapack_complex_float *tau, 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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