LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgges3_work()

lapack_int LAPACKE_zgges3_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 36 of file lapacke_zgges3_work.c.

47 {
48  lapack_int info = 0;
49  if( matrix_layout == LAPACK_COL_MAJOR ) {
50  /* Call LAPACK function and adjust info */
51  LAPACK_zgges3( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda, b, &ldb,
52  sdim, alpha, beta, vsl, &ldvsl, vsr, &ldvsr,
53  work, &lwork, rwork, 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  lapack_complex_double* a_t = NULL;
63  lapack_complex_double* b_t = NULL;
64  lapack_complex_double* vsl_t = NULL;
65  lapack_complex_double* vsr_t = NULL;
66  /* Check leading dimension(s) */
67  if( lda < n ) {
68  info = -8;
69  LAPACKE_xerbla( "LAPACKE_zgges3_work", info );
70  return info;
71  }
72  if( ldb < n ) {
73  info = -10;
74  LAPACKE_xerbla( "LAPACKE_zgges3_work", info );
75  return info;
76  }
77  if( ldvsl < n ) {
78  info = -15;
79  LAPACKE_xerbla( "LAPACKE_zgges3_work", info );
80  return info;
81  }
82  if( ldvsr < n ) {
83  info = -17;
84  LAPACKE_xerbla( "LAPACKE_zgges3_work", info );
85  return info;
86  }
87  /* Query optimal working array(s) size if requested */
88  if( lwork == -1 ) {
89  LAPACK_zgges3( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda_t, b,
90  &ldb_t, sdim, alpha, beta, vsl, &ldvsl_t, vsr,
91  &ldvsr_t, work, &lwork, rwork, bwork, &info );
92  return (info < 0) ? (info - 1) : info;
93  }
94  /* Allocate memory for temporary array(s) */
95  a_t = (lapack_complex_double*)
96  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
97  if( a_t == NULL ) {
99  goto exit_level_0;
100  }
101  b_t = (lapack_complex_double*)
102  LAPACKE_malloc( sizeof(lapack_complex_double) * ldb_t * MAX(1,n) );
103  if( b_t == NULL ) {
105  goto exit_level_1;
106  }
107  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
108  vsl_t = (lapack_complex_double*)
110  ldvsl_t * MAX(1,n) );
111  if( vsl_t == NULL ) {
113  goto exit_level_2;
114  }
115  }
116  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
117  vsr_t = (lapack_complex_double*)
119  ldvsr_t * MAX(1,n) );
120  if( vsr_t == NULL ) {
122  goto exit_level_3;
123  }
124  }
125  /* Transpose input matrices */
126  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
127  LAPACKE_zge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
128  /* Call LAPACK function and adjust info */
129  LAPACK_zgges3( &jobvsl, &jobvsr, &sort, selctg, &n, a_t, &lda_t, b_t,
130  &ldb_t, sdim, alpha, beta, vsl_t, &ldvsl_t, vsr_t,
131  &ldvsr_t, work, &lwork, rwork, bwork, &info );
132  if( info < 0 ) {
133  info = info - 1;
134  }
135  /* Transpose output matrices */
136  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
137  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
138  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
139  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vsl_t, ldvsl_t, vsl,
140  ldvsl );
141  }
142  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
143  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vsr_t, ldvsr_t, vsr,
144  ldvsr );
145  }
146  /* Release memory and exit */
147  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
148  LAPACKE_free( vsr_t );
149  }
150 exit_level_3:
151  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
152  LAPACKE_free( vsl_t );
153  }
154 exit_level_2:
155  LAPACKE_free( b_t );
156 exit_level_1:
157  LAPACKE_free( a_t );
158 exit_level_0:
159  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
160  LAPACKE_xerbla( "LAPACKE_zgges3_work", info );
161  }
162  } else {
163  info = -1;
164  LAPACKE_xerbla( "LAPACKE_zgges3_work", info );
165  }
166  return info;
167 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
void LAPACK_zgges3(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, lapack_int *info)
#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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