LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zggevx_work()

lapack_int LAPACKE_zggevx_work ( int  matrix_layout,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
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_int ilo,
lapack_int ihi,
double *  lscale,
double *  rscale,
double *  abnrm,
double *  bbnrm,
double *  rconde,
double *  rcondv,
lapack_complex_double work,
lapack_int  lwork,
double *  rwork,
lapack_int iwork,
lapack_logical bwork 
)

Definition at line 36 of file lapacke_zggevx_work.c.

50 {
51  lapack_int info = 0;
52  if( matrix_layout == LAPACK_COL_MAJOR ) {
53  /* Call LAPACK function and adjust info */
54  LAPACK_zggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, b, &ldb,
55  alpha, beta, vl, &ldvl, vr, &ldvr, ilo, ihi, lscale,
56  rscale, abnrm, bbnrm, rconde, rcondv, work, &lwork,
57  rwork, iwork, bwork, &info );
58  if( info < 0 ) {
59  info = info - 1;
60  }
61  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
62  lapack_int lda_t = MAX(1,n);
63  lapack_int ldb_t = MAX(1,n);
64  lapack_int ldvl_t = MAX(1,n);
65  lapack_int ldvr_t = MAX(1,n);
66  lapack_complex_double* a_t = NULL;
67  lapack_complex_double* b_t = NULL;
68  lapack_complex_double* vl_t = NULL;
69  lapack_complex_double* vr_t = NULL;
70  /* Check leading dimension(s) */
71  if( lda < n ) {
72  info = -8;
73  LAPACKE_xerbla( "LAPACKE_zggevx_work", info );
74  return info;
75  }
76  if( ldb < n ) {
77  info = -10;
78  LAPACKE_xerbla( "LAPACKE_zggevx_work", info );
79  return info;
80  }
81  if( ldvl < n ) {
82  info = -14;
83  LAPACKE_xerbla( "LAPACKE_zggevx_work", info );
84  return info;
85  }
86  if( ldvr < n ) {
87  info = -16;
88  LAPACKE_xerbla( "LAPACKE_zggevx_work", info );
89  return info;
90  }
91  /* Query optimal working array(s) size if requested */
92  if( lwork == -1 ) {
93  LAPACK_zggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, b,
94  &ldb_t, alpha, beta, vl, &ldvl_t, vr, &ldvr_t, ilo,
95  ihi, lscale, rscale, abnrm, bbnrm, rconde, rcondv,
96  work, &lwork, rwork, iwork, bwork, &info );
97  return (info < 0) ? (info - 1) : info;
98  }
99  /* Allocate memory for temporary array(s) */
100  a_t = (lapack_complex_double*)
101  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
102  if( a_t == NULL ) {
104  goto exit_level_0;
105  }
106  b_t = (lapack_complex_double*)
107  LAPACKE_malloc( sizeof(lapack_complex_double) * ldb_t * MAX(1,n) );
108  if( b_t == NULL ) {
110  goto exit_level_1;
111  }
112  if( LAPACKE_lsame( jobvl, 'v' ) ) {
113  vl_t = (lapack_complex_double*)
115  ldvl_t * MAX(1,n) );
116  if( vl_t == NULL ) {
118  goto exit_level_2;
119  }
120  }
121  if( LAPACKE_lsame( jobvr, 'v' ) ) {
122  vr_t = (lapack_complex_double*)
124  ldvr_t * MAX(1,n) );
125  if( vr_t == NULL ) {
127  goto exit_level_3;
128  }
129  }
130  /* Transpose input matrices */
131  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
132  LAPACKE_zge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
133  /* Call LAPACK function and adjust info */
134  LAPACK_zggevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, b_t,
135  &ldb_t, alpha, beta, vl_t, &ldvl_t, vr_t, &ldvr_t, ilo,
136  ihi, lscale, rscale, abnrm, bbnrm, rconde, rcondv, work,
137  &lwork, rwork, iwork, bwork, &info );
138  if( info < 0 ) {
139  info = info - 1;
140  }
141  /* Transpose output matrices */
142  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
143  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
144  if( LAPACKE_lsame( jobvl, 'v' ) ) {
145  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
146  }
147  if( LAPACKE_lsame( jobvr, 'v' ) ) {
148  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
149  }
150  /* Release memory and exit */
151  if( LAPACKE_lsame( jobvr, 'v' ) ) {
152  LAPACKE_free( vr_t );
153  }
154 exit_level_3:
155  if( LAPACKE_lsame( jobvl, 'v' ) ) {
156  LAPACKE_free( vl_t );
157  }
158 exit_level_2:
159  LAPACKE_free( b_t );
160 exit_level_1:
161  LAPACKE_free( a_t );
162 exit_level_0:
163  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
164  LAPACKE_xerbla( "LAPACKE_zggevx_work", info );
165  }
166  } else {
167  info = -1;
168  LAPACKE_xerbla( "LAPACKE_zggevx_work", info );
169  }
170  return info;
171 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
void LAPACK_zggevx(char *balanc, char *jobvl, char *jobvr, char *sense, 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_int *ilo, lapack_int *ihi, double *lscale, double *rscale, double *abnrm, double *bbnrm, double *rconde, double *rcondv, lapack_complex_double *work, lapack_int *lwork, double *rwork, lapack_int *iwork, lapack_logical *bwork, lapack_int *info)
#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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