LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dggevx_work()

lapack_int LAPACKE_dggevx_work ( int  matrix_layout,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
lapack_int  n,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double *  alphar,
double *  alphai,
double *  beta,
double *  vl,
lapack_int  ldvl,
double *  vr,
lapack_int  ldvr,
lapack_int ilo,
lapack_int ihi,
double *  lscale,
double *  rscale,
double *  abnrm,
double *  bbnrm,
double *  rconde,
double *  rcondv,
double *  work,
lapack_int  lwork,
lapack_int iwork,
lapack_logical bwork 
)

Definition at line 36 of file lapacke_dggevx_work.c.

46 {
47  lapack_int info = 0;
48  if( matrix_layout == LAPACK_COL_MAJOR ) {
49  /* Call LAPACK function and adjust info */
50  LAPACK_dggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, b, &ldb,
51  alphar, alphai, beta, vl, &ldvl, vr, &ldvr, ilo, ihi,
52  lscale, rscale, abnrm, bbnrm, rconde, rcondv, work,
53  &lwork, iwork, 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 ldvl_t = MAX(1,n);
61  lapack_int ldvr_t = MAX(1,n);
62  double* a_t = NULL;
63  double* b_t = NULL;
64  double* vl_t = NULL;
65  double* vr_t = NULL;
66  /* Check leading dimension(s) */
67  if( lda < n ) {
68  info = -8;
69  LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
70  return info;
71  }
72  if( ldb < n ) {
73  info = -10;
74  LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
75  return info;
76  }
77  if( ldvl < n ) {
78  info = -15;
79  LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
80  return info;
81  }
82  if( ldvr < n ) {
83  info = -17;
84  LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
85  return info;
86  }
87  /* Query optimal working array(s) size if requested */
88  if( lwork == -1 ) {
89  LAPACK_dggevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, b,
90  &ldb_t, alphar, alphai, beta, vl, &ldvl_t, vr,
91  &ldvr_t, ilo, ihi, lscale, rscale, abnrm, bbnrm,
92  rconde, rcondv, work, &lwork, iwork, 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 ) {
99  goto exit_level_0;
100  }
101  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
102  if( b_t == NULL ) {
104  goto exit_level_1;
105  }
106  if( LAPACKE_lsame( jobvl, 'v' ) ) {
107  vl_t = (double*)
108  LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,n) );
109  if( vl_t == NULL ) {
111  goto exit_level_2;
112  }
113  }
114  if( LAPACKE_lsame( jobvr, 'v' ) ) {
115  vr_t = (double*)
116  LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,n) );
117  if( vr_t == NULL ) {
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_dggevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, b_t,
127  &ldb_t, alphar, alphai, beta, vl_t, &ldvl_t, vr_t,
128  &ldvr_t, ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
129  rcondv, work, &lwork, iwork, 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( jobvl, 'v' ) ) {
137  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
138  }
139  if( LAPACKE_lsame( jobvr, 'v' ) ) {
140  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
141  }
142  /* Release memory and exit */
143  if( LAPACKE_lsame( jobvr, 'v' ) ) {
144  LAPACKE_free( vr_t );
145  }
146 exit_level_3:
147  if( LAPACKE_lsame( jobvl, 'v' ) ) {
148  LAPACKE_free( vl_t );
149  }
150 exit_level_2:
151  LAPACKE_free( b_t );
152 exit_level_1:
153  LAPACKE_free( a_t );
154 exit_level_0:
155  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
156  LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
157  }
158  } else {
159  info = -1;
160  LAPACKE_xerbla( "LAPACKE_dggevx_work", info );
161  }
162  return info;
163 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_dggevx(char *balanc, char *jobvl, char *jobvr, char *sense, lapack_int *n, double *a, lapack_int *lda, double *b, lapack_int *ldb, double *alphar, double *alphai, double *beta, double *vl, lapack_int *ldvl, double *vr, lapack_int *ldvr, lapack_int *ilo, lapack_int *ihi, double *lscale, double *rscale, double *abnrm, double *bbnrm, double *rconde, double *rcondv, double *work, lapack_int *lwork, lapack_int *iwork, lapack_logical *bwork, 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
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