LAPACK  3.9.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgges_work()

lapack_int LAPACKE_zgges_work ( int  matrix_layout,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_Z_SELECT2  selctg,
lapack_int  n,
lapack_complex_double *  a,
lapack_int  lda,
lapack_complex_double *  b,
lapack_int  ldb,
lapack_int *  sdim,
lapack_complex_double *  alpha,
lapack_complex_double *  beta,
lapack_complex_double *  vsl,
lapack_int  ldvsl,
lapack_complex_double *  vsr,
lapack_int  ldvsr,
lapack_complex_double *  work,
lapack_int  lwork,
double *  rwork,
lapack_logical *  bwork 
)

Definition at line 35 of file lapacke_zgges_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zgges( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda, b, &ldb,
50  sdim, alpha, beta, vsl, &ldvsl, vsr, &ldvsr, work, &lwork,
51  rwork, bwork, &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int lda_t = MAX(1,n);
57  lapack_int ldb_t = MAX(1,n);
58  lapack_int ldvsl_t = MAX(1,n);
59  lapack_int ldvsr_t = MAX(1,n);
60  lapack_complex_double* a_t = NULL;
61  lapack_complex_double* b_t = NULL;
62  lapack_complex_double* vsl_t = NULL;
63  lapack_complex_double* vsr_t = NULL;
64  /* Check leading dimension(s) */
65  if( lda < n ) {
66  info = -8;
67  LAPACKE_xerbla( "LAPACKE_zgges_work", info );
68  return info;
69  }
70  if( ldb < n ) {
71  info = -10;
72  LAPACKE_xerbla( "LAPACKE_zgges_work", info );
73  return info;
74  }
75  if( ldvsl < n ) {
76  info = -15;
77  LAPACKE_xerbla( "LAPACKE_zgges_work", info );
78  return info;
79  }
80  if( ldvsr < n ) {
81  info = -17;
82  LAPACKE_xerbla( "LAPACKE_zgges_work", info );
83  return info;
84  }
85  /* Query optimal working array(s) size if requested */
86  if( lwork == -1 ) {
87  LAPACK_zgges( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda_t, b,
88  &ldb_t, sdim, alpha, beta, vsl, &ldvsl_t, vsr,
89  &ldvsr_t, work, &lwork, rwork, bwork, &info );
90  return (info < 0) ? (info - 1) : info;
91  }
92  /* Allocate memory for temporary array(s) */
93  a_t = (lapack_complex_double*)
94  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
95  if( a_t == NULL ) {
96  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
97  goto exit_level_0;
98  }
99  b_t = (lapack_complex_double*)
100  LAPACKE_malloc( sizeof(lapack_complex_double) * ldb_t * MAX(1,n) );
101  if( b_t == NULL ) {
102  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
103  goto exit_level_1;
104  }
105  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
106  vsl_t = (lapack_complex_double*)
107  LAPACKE_malloc( sizeof(lapack_complex_double) *
108  ldvsl_t * MAX(1,n) );
109  if( vsl_t == NULL ) {
110  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
111  goto exit_level_2;
112  }
113  }
114  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
115  vsr_t = (lapack_complex_double*)
116  LAPACKE_malloc( sizeof(lapack_complex_double) *
117  ldvsr_t * MAX(1,n) );
118  if( vsr_t == NULL ) {
119  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
120  goto exit_level_3;
121  }
122  }
123  /* Transpose input matrices */
124  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
125  LAPACKE_zge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
126  /* Call LAPACK function and adjust info */
127  LAPACK_zgges( &jobvsl, &jobvsr, &sort, selctg, &n, a_t, &lda_t, b_t,
128  &ldb_t, sdim, alpha, beta, vsl_t, &ldvsl_t, vsr_t,
129  &ldvsr_t, work, &lwork, rwork, bwork, &info );
130  if( info < 0 ) {
131  info = info - 1;
132  }
133  /* Transpose output matrices */
134  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
135  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
136  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
137  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vsl_t, ldvsl_t, vsl,
138  ldvsl );
139  }
140  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
141  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vsr_t, ldvsr_t, vsr,
142  ldvsr );
143  }
144  /* Release memory and exit */
145  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
146  LAPACKE_free( vsr_t );
147  }
148 exit_level_3:
149  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
150  LAPACKE_free( vsl_t );
151  }
152 exit_level_2:
153  LAPACKE_free( b_t );
154 exit_level_1:
155  LAPACKE_free( a_t );
156 exit_level_0:
157  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
158  LAPACKE_xerbla( "LAPACKE_zgges_work", info );
159  }
160  } else {
161  info = -1;
162  LAPACKE_xerbla( "LAPACKE_zgges_work", info );
163  }
164  return info;
165 }
lapack_int
#define lapack_int
Definition: lapack.h:83
LAPACK_zgges
void LAPACK_zgges(char const *jobvsl, char const *jobvsr, char const *sort, LAPACK_Z_SELECT2 selctg, lapack_int const *n, lapack_complex_double *A, lapack_int const *lda, lapack_complex_double *B, lapack_int const *ldb, lapack_int *sdim, lapack_complex_double *alpha, lapack_complex_double *beta, lapack_complex_double *VSL, lapack_int const *ldvsl, lapack_complex_double *VSR, lapack_int const *ldvsr, lapack_complex_double *work, lapack_int const *lwork, double *rwork, lapack_logical *BWORK, lapack_int *info)
lapack_complex_double
#define lapack_complex_double
Definition: lapack.h:63
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
LAPACKE_zge_trans
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
Definition: lapacke_zge_trans.c:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
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