LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zggesx_work()

lapack_int LAPACKE_zggesx_work ( int  matrix_layout,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_Z_SELECT2  selctg,
char  sense,
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,
double *  rconde,
double *  rcondv,
lapack_complex_double work,
lapack_int  lwork,
double *  rwork,
lapack_int iwork,
lapack_int  liwork,
lapack_logical bwork 
)

Definition at line 36 of file lapacke_zggesx_work.c.

49 {
50  lapack_int info = 0;
51  if( matrix_layout == LAPACK_COL_MAJOR ) {
52  /* Call LAPACK function and adjust info */
53  LAPACK_zggesx( &jobvsl, &jobvsr, &sort, selctg, &sense, &n, a, &lda, b,
54  &ldb, sdim, alpha, beta, vsl, &ldvsl, vsr, &ldvsr,
55  rconde, rcondv, work, &lwork, rwork, iwork, &liwork,
56  bwork, &info );
57  if( info < 0 ) {
58  info = info - 1;
59  }
60  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
61  lapack_int lda_t = MAX(1,n);
62  lapack_int ldb_t = MAX(1,n);
63  lapack_int ldvsl_t = MAX(1,n);
64  lapack_int ldvsr_t = MAX(1,n);
65  lapack_complex_double* a_t = NULL;
66  lapack_complex_double* b_t = NULL;
67  lapack_complex_double* vsl_t = NULL;
68  lapack_complex_double* vsr_t = NULL;
69  /* Check leading dimension(s) */
70  if( lda < n ) {
71  info = -9;
72  LAPACKE_xerbla( "LAPACKE_zggesx_work", info );
73  return info;
74  }
75  if( ldb < n ) {
76  info = -11;
77  LAPACKE_xerbla( "LAPACKE_zggesx_work", info );
78  return info;
79  }
80  if( ldvsl < n ) {
81  info = -16;
82  LAPACKE_xerbla( "LAPACKE_zggesx_work", info );
83  return info;
84  }
85  if( ldvsr < n ) {
86  info = -18;
87  LAPACKE_xerbla( "LAPACKE_zggesx_work", info );
88  return info;
89  }
90  /* Query optimal working array(s) size if requested */
91  if( liwork == -1 || lwork == -1 ) {
92  LAPACK_zggesx( &jobvsl, &jobvsr, &sort, selctg, &sense, &n, a,
93  &lda_t, b, &ldb_t, sdim, alpha, beta, vsl, &ldvsl_t,
94  vsr, &ldvsr_t, rconde, rcondv, work, &lwork, rwork,
95  iwork, &liwork, bwork, &info );
96  return (info < 0) ? (info - 1) : info;
97  }
98  /* Allocate memory for temporary array(s) */
99  a_t = (lapack_complex_double*)
100  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
101  if( a_t == NULL ) {
103  goto exit_level_0;
104  }
105  b_t = (lapack_complex_double*)
106  LAPACKE_malloc( sizeof(lapack_complex_double) * ldb_t * MAX(1,n) );
107  if( b_t == NULL ) {
109  goto exit_level_1;
110  }
111  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
112  vsl_t = (lapack_complex_double*)
114  ldvsl_t * MAX(1,n) );
115  if( vsl_t == NULL ) {
117  goto exit_level_2;
118  }
119  }
120  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
121  vsr_t = (lapack_complex_double*)
123  ldvsr_t * MAX(1,n) );
124  if( vsr_t == NULL ) {
126  goto exit_level_3;
127  }
128  }
129  /* Transpose input matrices */
130  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
131  LAPACKE_zge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
132  /* Call LAPACK function and adjust info */
133  LAPACK_zggesx( &jobvsl, &jobvsr, &sort, selctg, &sense, &n, a_t, &lda_t,
134  b_t, &ldb_t, sdim, alpha, beta, vsl_t, &ldvsl_t, vsr_t,
135  &ldvsr_t, rconde, rcondv, work, &lwork, rwork, iwork,
136  &liwork, bwork, &info );
137  if( info < 0 ) {
138  info = info - 1;
139  }
140  /* Transpose output matrices */
141  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
142  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
143  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
144  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vsl_t, ldvsl_t, vsl,
145  ldvsl );
146  }
147  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
148  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vsr_t, ldvsr_t, vsr,
149  ldvsr );
150  }
151  /* Release memory and exit */
152  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
153  LAPACKE_free( vsr_t );
154  }
155 exit_level_3:
156  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
157  LAPACKE_free( vsl_t );
158  }
159 exit_level_2:
160  LAPACKE_free( b_t );
161 exit_level_1:
162  LAPACKE_free( a_t );
163 exit_level_0:
164  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
165  LAPACKE_xerbla( "LAPACKE_zggesx_work", info );
166  }
167  } else {
168  info = -1;
169  LAPACKE_xerbla( "LAPACKE_zggesx_work", info );
170  }
171  return info;
172 }
void LAPACK_zggesx(char *jobvsl, char *jobvsr, char *sort, LAPACK_Z_SELECT2 selctg, char *sense, 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, double *rconde, double *rcondv, lapack_complex_double *work, lapack_int *lwork, double *rwork, lapack_int *iwork, lapack_int *liwork, lapack_logical *bwork, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
#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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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)
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