LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zggev3_work()

lapack_int LAPACKE_zggev3_work ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double b,
lapack_int  ldb,
lapack_complex_double alpha,
lapack_complex_double beta,
lapack_complex_double vl,
lapack_int  ldvl,
lapack_complex_double vr,
lapack_int  ldvr,
lapack_complex_double work,
lapack_int  lwork,
double *  rwork 
)

Definition at line 36 of file lapacke_zggev3_work.c.

46 {
47  lapack_int info = 0;
48  if( matrix_layout == LAPACK_COL_MAJOR ) {
49  /* Call LAPACK function and adjust info */
50  LAPACK_zggev3( &jobvl, &jobvr, &n, a, &lda, b, &ldb, alpha, beta, vl,
51  &ldvl, vr, &ldvr, work, &lwork, rwork, &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int nrows_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
57  lapack_int ncols_vl = LAPACKE_lsame( jobvl, 'v' ) ? n : 1;
58  lapack_int nrows_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
59  lapack_int ncols_vr = LAPACKE_lsame( jobvr, 'v' ) ? n : 1;
60  lapack_int lda_t = MAX(1,n);
61  lapack_int ldb_t = MAX(1,n);
62  lapack_int ldvl_t = MAX(1,nrows_vl);
63  lapack_int ldvr_t = MAX(1,nrows_vr);
64  lapack_complex_double* a_t = NULL;
65  lapack_complex_double* b_t = NULL;
66  lapack_complex_double* vl_t = NULL;
67  lapack_complex_double* vr_t = NULL;
68  /* Check leading dimension(s) */
69  if( lda < n ) {
70  info = -6;
71  LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
72  return info;
73  }
74  if( ldb < n ) {
75  info = -8;
76  LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
77  return info;
78  }
79  if( ldvl < ncols_vl ) {
80  info = -12;
81  LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
82  return info;
83  }
84  if( ldvr < ncols_vr ) {
85  info = -14;
86  LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
87  return info;
88  }
89  /* Query optimal working array(s) size if requested */
90  if( lwork == -1 ) {
91  LAPACK_zggev3( &jobvl, &jobvr, &n, a, &lda_t, b, &ldb_t,
92  alpha, beta, vl, &ldvl_t, vr, &ldvr_t,
93  work, &lwork, rwork, &info );
94  return (info < 0) ? (info - 1) : info;
95  }
96  /* Allocate memory for temporary array(s) */
97  a_t = (lapack_complex_double*)
98  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
99  if( a_t == NULL ) {
101  goto exit_level_0;
102  }
103  b_t = (lapack_complex_double*)
104  LAPACKE_malloc( sizeof(lapack_complex_double) * ldb_t * MAX(1,n) );
105  if( b_t == NULL ) {
107  goto exit_level_1;
108  }
109  if( LAPACKE_lsame( jobvl, 'v' ) ) {
110  vl_t = (lapack_complex_double*)
112  ldvl_t * MAX(1,ncols_vl) );
113  if( vl_t == NULL ) {
115  goto exit_level_2;
116  }
117  }
118  if( LAPACKE_lsame( jobvr, 'v' ) ) {
119  vr_t = (lapack_complex_double*)
121  ldvr_t * MAX(1,ncols_vr) );
122  if( vr_t == NULL ) {
124  goto exit_level_3;
125  }
126  }
127  /* Transpose input matrices */
128  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
129  LAPACKE_zge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
130  /* Call LAPACK function and adjust info */
131  LAPACK_zggev3( &jobvl, &jobvr, &n, a_t, &lda_t, b_t, &ldb_t,
132  alpha, beta, vl_t, &ldvl_t, vr_t, &ldvr_t,
133  work, &lwork, rwork, &info );
134  if( info < 0 ) {
135  info = info - 1;
136  }
137  /* Transpose output matrices */
138  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
139  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
140  if( LAPACKE_lsame( jobvl, 'v' ) ) {
141  LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_vl, ncols_vl, vl_t,
142  ldvl_t, vl, ldvl );
143  }
144  if( LAPACKE_lsame( jobvr, 'v' ) ) {
145  LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_vr, ncols_vr, vr_t,
146  ldvr_t, vr, ldvr );
147  }
148  /* Release memory and exit */
149  if( LAPACKE_lsame( jobvr, 'v' ) ) {
150  LAPACKE_free( vr_t );
151  }
152 exit_level_3:
153  if( LAPACKE_lsame( jobvl, 'v' ) ) {
154  LAPACKE_free( vl_t );
155  }
156 exit_level_2:
157  LAPACKE_free( b_t );
158 exit_level_1:
159  LAPACKE_free( a_t );
160 exit_level_0:
161  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
162  LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
163  }
164  } else {
165  info = -1;
166  LAPACKE_xerbla( "LAPACKE_zggev3_work", info );
167  }
168  return info;
169 }
#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
void LAPACK_zggev3(char *jobvl, char *jobvr, lapack_int *n, lapack_complex_double *a, lapack_int *lda, lapack_complex_double *b, lapack_int *ldb, lapack_complex_double *alpha, lapack_complex_double *beta, lapack_complex_double *vl, lapack_int *ldvl, lapack_complex_double *vr, lapack_int *ldvr, lapack_complex_double *work, lapack_int *lwork, double *rwork, lapack_int *info)
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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