LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_dggesx_work ( int  matrix_layout,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_D_SELECT3  selctg,
char  sense,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
lapack_int *  sdim,
double *  alphar,
double *  alphai,
double *  beta,
double *  vsl,
lapack_int  ldvsl,
double *  vsr,
lapack_int  ldvsr,
double *  rconde,
double *  rcondv,
double *  work,
lapack_int  lwork,
lapack_int *  iwork,
lapack_int  liwork,
lapack_logical *  bwork 
)

Definition at line 36 of file lapacke_dggesx_work.c.

46 {
47  lapack_int info = 0;
48  if( matrix_layout == LAPACK_COL_MAJOR ) {
49  /* Call LAPACK function and adjust info */
50  LAPACK_dggesx( &jobvsl, &jobvsr, &sort, selctg, &sense, &n, a, &lda, b,
51  &ldb, sdim, alphar, alphai, beta, vsl, &ldvsl, vsr,
52  &ldvsr, rconde, rcondv, work, &lwork, iwork, &liwork,
53  bwork, &info );
54  if( info < 0 ) {
55  info = info - 1;
56  }
57  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
58  lapack_int lda_t = MAX(1,n);
59  lapack_int ldb_t = MAX(1,n);
60  lapack_int ldvsl_t = MAX(1,n);
61  lapack_int ldvsr_t = MAX(1,n);
62  double* a_t = NULL;
63  double* b_t = NULL;
64  double* vsl_t = NULL;
65  double* vsr_t = NULL;
66  /* Check leading dimension(s) */
67  if( lda < n ) {
68  info = -9;
69  LAPACKE_xerbla( "LAPACKE_dggesx_work", info );
70  return info;
71  }
72  if( ldb < n ) {
73  info = -11;
74  LAPACKE_xerbla( "LAPACKE_dggesx_work", info );
75  return info;
76  }
77  if( ldvsl < n ) {
78  info = -17;
79  LAPACKE_xerbla( "LAPACKE_dggesx_work", info );
80  return info;
81  }
82  if( ldvsr < n ) {
83  info = -19;
84  LAPACKE_xerbla( "LAPACKE_dggesx_work", info );
85  return info;
86  }
87  /* Query optimal working array(s) size if requested */
88  if( liwork == -1 || lwork == -1 ) {
89  LAPACK_dggesx( &jobvsl, &jobvsr, &sort, selctg, &sense, &n, a,
90  &lda_t, b, &ldb_t, sdim, alphar, alphai, beta, vsl,
91  &ldvsl_t, vsr, &ldvsr_t, rconde, rcondv, work,
92  &lwork, iwork, &liwork, bwork, &info );
93  return (info < 0) ? (info - 1) : info;
94  }
95  /* Allocate memory for temporary array(s) */
96  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
97  if( a_t == NULL ) {
98  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
99  goto exit_level_0;
100  }
101  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
102  if( b_t == NULL ) {
103  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
104  goto exit_level_1;
105  }
106  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
107  vsl_t = (double*)
108  LAPACKE_malloc( sizeof(double) * 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 = (double*)
116  LAPACKE_malloc( sizeof(double) * ldvsr_t * MAX(1,n) );
117  if( vsr_t == NULL ) {
118  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
119  goto exit_level_3;
120  }
121  }
122  /* Transpose input matrices */
123  LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
124  LAPACKE_dge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
125  /* Call LAPACK function and adjust info */
126  LAPACK_dggesx( &jobvsl, &jobvsr, &sort, selctg, &sense, &n, a_t, &lda_t,
127  b_t, &ldb_t, sdim, alphar, alphai, beta, vsl_t, &ldvsl_t,
128  vsr_t, &ldvsr_t, rconde, rcondv, work, &lwork, iwork,
129  &liwork, bwork, &info );
130  if( info < 0 ) {
131  info = info - 1;
132  }
133  /* Transpose output matrices */
134  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
135  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
136  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
137  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vsl_t, ldvsl_t, vsl,
138  ldvsl );
139  }
140  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
141  LAPACKE_dge_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_dggesx_work", info );
159  }
160  } else {
161  info = -1;
162  LAPACKE_xerbla( "LAPACKE_dggesx_work", info );
163  }
164  return info;
165 }
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
LAPACK_dggesx
void LAPACK_dggesx(char *jobvsl, char *jobvsr, char *sort, LAPACK_D_SELECT3 selctg, char *sense, lapack_int *n, double *a, lapack_int *lda, double *b, lapack_int *ldb, lapack_int *sdim, double *alphar, double *alphai, double *beta, double *vsl, lapack_int *ldvsl, double *vsr, lapack_int *ldvsr, double *rconde, double *rcondv, double *work, lapack_int *lwork, lapack_int *iwork, lapack_int *liwork, lapack_logical *bwork, lapack_int *info)
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_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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