LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_chbtrd_work()

lapack_int LAPACKE_chbtrd_work ( int  matrix_layout,
char  vect,
char  uplo,
lapack_int  n,
lapack_int  kd,
lapack_complex_float ab,
lapack_int  ldab,
float *  d,
float *  e,
lapack_complex_float q,
lapack_int  ldq,
lapack_complex_float work 
)

Definition at line 36 of file lapacke_chbtrd_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_chbtrd( &vect, &uplo, &n, &kd, ab, &ldab, d, e, q, &ldq, work,
46  &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int ldab_t = MAX(1,kd+1);
52  lapack_int ldq_t = MAX(1,n);
53  lapack_complex_float* ab_t = NULL;
54  lapack_complex_float* q_t = NULL;
55  /* Check leading dimension(s) */
56  if( ldab < n ) {
57  info = -7;
58  LAPACKE_xerbla( "LAPACKE_chbtrd_work", info );
59  return info;
60  }
61  if( ldq < n ) {
62  info = -11;
63  LAPACKE_xerbla( "LAPACKE_chbtrd_work", info );
64  return info;
65  }
66  /* Allocate memory for temporary array(s) */
67  ab_t = (lapack_complex_float*)
68  LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
69  if( ab_t == NULL ) {
71  goto exit_level_0;
72  }
73  if( LAPACKE_lsame( vect, 'u' ) || LAPACKE_lsame( vect, 'v' ) ) {
74  q_t = (lapack_complex_float*)
76  ldq_t * MAX(1,n) );
77  if( q_t == NULL ) {
79  goto exit_level_1;
80  }
81  }
82  /* Transpose input matrices */
83  LAPACKE_chb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
84  if( LAPACKE_lsame( vect, 'u' ) || LAPACKE_lsame( vect, 'v' ) ) {
85  LAPACKE_cge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
86  }
87  /* Call LAPACK function and adjust info */
88  LAPACK_chbtrd( &vect, &uplo, &n, &kd, ab_t, &ldab_t, d, e, q_t, &ldq_t,
89  work, &info );
90  if( info < 0 ) {
91  info = info - 1;
92  }
93  /* Transpose output matrices */
94  LAPACKE_chb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
95  ldab );
96  if( LAPACKE_lsame( vect, 'u' ) || LAPACKE_lsame( vect, 'v' ) ) {
97  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
98  }
99  /* Release memory and exit */
100  if( LAPACKE_lsame( vect, 'u' ) || LAPACKE_lsame( vect, 'v' ) ) {
101  LAPACKE_free( q_t );
102  }
103 exit_level_1:
104  LAPACKE_free( ab_t );
105 exit_level_0:
106  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
107  LAPACKE_xerbla( "LAPACKE_chbtrd_work", info );
108  }
109  } else {
110  info = -1;
111  LAPACKE_xerbla( "LAPACKE_chbtrd_work", info );
112  }
113  return info;
114 }
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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
void LAPACK_chbtrd(char *vect, char *uplo, lapack_int *n, lapack_int *kd, lapack_complex_float *ab, lapack_int *ldab, float *d, float *e, lapack_complex_float *q, lapack_int *ldq, lapack_complex_float *work, lapack_int *info)
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
void LAPACKE_chb_trans(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
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