LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zggevx()

lapack_int LAPACKE_zggevx ( 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 
)

Definition at line 36 of file lapacke_zggevx.c.

47 {
48  lapack_int info = 0;
49  lapack_int lwork = -1;
50  /* Additional scalars declarations for work arrays */
51  lapack_int lrwork;
52  lapack_logical* bwork = NULL;
53  lapack_int* iwork = NULL;
54  double* rwork = NULL;
55  lapack_complex_double* work = NULL;
56  lapack_complex_double work_query;
57  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
58  LAPACKE_xerbla( "LAPACKE_zggevx", -1 );
59  return -1;
60  }
61 #ifndef LAPACK_DISABLE_NAN_CHECK
62  if( LAPACKE_get_nancheck() ) {
63  /* Optionally check input matrices for NaNs */
64  if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
65  return -7;
66  }
67  if( LAPACKE_zge_nancheck( matrix_layout, n, n, b, ldb ) ) {
68  return -9;
69  }
70  }
71 #endif
72  /* Additional scalars initializations for work arrays */
73  if( LAPACKE_lsame( balanc, 's' ) || LAPACKE_lsame( balanc, 'b' ) ) {
74  lrwork = MAX(1,6*n);
75  } else {
76  lrwork = MAX(1,2*n);
77  }
78  /* Allocate memory for working array(s) */
79  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
80  LAPACKE_lsame( sense, 'v' ) ) {
81  bwork = (lapack_logical*)
82  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
83  if( bwork == NULL ) {
85  goto exit_level_0;
86  }
87  }
88  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
89  LAPACKE_lsame( sense, 'v' ) ) {
90  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n+2) );
91  if( iwork == NULL ) {
93  goto exit_level_1;
94  }
95  }
96  rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
97  if( rwork == NULL ) {
99  goto exit_level_2;
100  }
101  /* Query optimal working array(s) size */
102  info = LAPACKE_zggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
103  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
104  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
105  rcondv, &work_query, lwork, rwork, iwork,
106  bwork );
107  if( info != 0 ) {
108  goto exit_level_3;
109  }
110  lwork = LAPACK_Z2INT( work_query );
111  /* Allocate memory for work arrays */
112  work = (lapack_complex_double*)
113  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
114  if( work == NULL ) {
116  goto exit_level_3;
117  }
118  /* Call middle-level interface */
119  info = LAPACKE_zggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
120  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
121  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
122  rcondv, work, lwork, rwork, iwork, bwork );
123  /* Release memory and exit */
124  LAPACKE_free( work );
125 exit_level_3:
126  LAPACKE_free( rwork );
127 exit_level_2:
128  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
129  LAPACKE_lsame( sense, 'v' ) ) {
130  LAPACKE_free( iwork );
131  }
132 exit_level_1:
133  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
134  LAPACKE_lsame( sense, 'v' ) ) {
135  LAPACKE_free( bwork );
136  }
137 exit_level_0:
138  if( info == LAPACK_WORK_MEMORY_ERROR ) {
139  LAPACKE_xerbla( "LAPACKE_zggevx", info );
140  }
141  return info;
142 }
#define lapack_logical
Definition: lapacke.h:51
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
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)
#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
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
int LAPACKE_get_nancheck()
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