LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_dgghd3_work ( int  matrix_layout,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double *  q,
lapack_int  ldq,
double *  z,
lapack_int  ldz,
double *  work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_dgghd3_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_dgghd3( &compq, &compz, &n, &ilo, &ihi, a, &lda, b, &ldb, q,
47  &ldq, z, &ldz, work, &lwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int lda_t = MAX(1,n);
53  lapack_int ldb_t = MAX(1,n);
54  lapack_int ldq_t = MAX(1,n);
55  lapack_int ldz_t = MAX(1,n);
56  double* a_t = NULL;
57  double* b_t = NULL;
58  double* q_t = NULL;
59  double* z_t = NULL;
60  /* Query optimal working array(s) size if requested */
61  if( lwork == -1 ) {
62  LAPACK_dgghd3( &compq, &compz, &n, &ilo, &ihi, a, &lda, b, &ldb, q,
63  &ldq, z, &ldz, work, &lwork, &info );
64  return (info < 0) ? (info - 1) : info;
65  }
66  /* Check leading dimension(s) */
67  if( lda < n ) {
68  info = -8;
69  LAPACKE_xerbla( "LAPACKE_dgghd3_work", info );
70  return info;
71  }
72  if( ldb < n ) {
73  info = -10;
74  LAPACKE_xerbla( "LAPACKE_dgghd3_work", info );
75  return info;
76  }
77  if( ldq < n ) {
78  info = -12;
79  LAPACKE_xerbla( "LAPACKE_dgghd3_work", info );
80  return info;
81  }
82  if( ldz < n ) {
83  info = -14;
84  LAPACKE_xerbla( "LAPACKE_dgghd3_work", info );
85  return info;
86  }
87  /* Allocate memory for temporary array(s) */
88  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
89  if( a_t == NULL ) {
90  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
91  goto exit_level_0;
92  }
93  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
94  if( b_t == NULL ) {
95  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
96  goto exit_level_1;
97  }
98  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
99  q_t = (double*)LAPACKE_malloc( sizeof(double) * ldq_t * MAX(1,n) );
100  if( q_t == NULL ) {
101  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
102  goto exit_level_2;
103  }
104  }
105  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
106  z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
107  if( z_t == NULL ) {
108  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
109  goto exit_level_3;
110  }
111  }
112  /* Transpose input matrices */
113  LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
114  LAPACKE_dge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
115  if( LAPACKE_lsame( compq, 'v' ) ) {
116  LAPACKE_dge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
117  }
118  if( LAPACKE_lsame( compz, 'v' ) ) {
119  LAPACKE_dge_trans( matrix_layout, n, n, z, ldz, z_t, ldz_t );
120  }
121  /* Call LAPACK function and adjust info */
122  LAPACK_dgghd3( &compq, &compz, &n, &ilo, &ihi, a_t, &lda_t, b_t, &ldb_t,
123  q_t, &ldq_t, z_t, &ldz_t, work, &lwork, &info );
124  if( info < 0 ) {
125  info = info - 1;
126  }
127  /* Transpose output matrices */
128  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
129  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
130  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
131  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
132  }
133  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
134  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
135  }
136  /* Release memory and exit */
137  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
138  LAPACKE_free( z_t );
139  }
140  exit_level_3:
141  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
142  LAPACKE_free( q_t );
143  }
144  exit_level_2:
145  LAPACKE_free( b_t );
146  exit_level_1:
147  LAPACKE_free( a_t );
148  exit_level_0:
149  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
150  LAPACKE_xerbla( "LAPACKE_dgghd3_work", info );
151  }
152  } else {
153  info = -1;
154  LAPACKE_xerbla( "LAPACKE_dgghd3_work", info );
155  }
156  return info;
157 }
LAPACKE_dge_trans
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
Definition: lapacke_dge_trans.c:40
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:47
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:113
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:37
LAPACK_dgghd3
void LAPACK_dgghd3(char *compq, char *compz, lapack_int *n, lapack_int *ilo, lapack_int *ihi, double *a, lapack_int *lda, double *b, lapack_int *ldb, double *q, lapack_int *ldq, double *z, lapack_int *ldz, double *work, lapack_int *lwork, lapack_int *info)
lapack_int
#define lapack_int
Definition: lapacke.h:47
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123

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