LAPACK  3.10.1
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 35 of file lapacke_zggevx.c.

46 {
47  lapack_int info = 0;
48  lapack_int lwork = -1;
49  /* Additional scalars declarations for work arrays */
50  lapack_int lrwork;
51  lapack_logical* bwork = NULL;
52  lapack_int* iwork = NULL;
53  double* rwork = NULL;
54  lapack_complex_double* work = NULL;
55  lapack_complex_double work_query;
56  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
57  LAPACKE_xerbla( "LAPACKE_zggevx", -1 );
58  return -1;
59  }
60 #ifndef LAPACK_DISABLE_NAN_CHECK
61  if( LAPACKE_get_nancheck() ) {
62  /* Optionally check input matrices for NaNs */
63  if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
64  return -7;
65  }
66  if( LAPACKE_zge_nancheck( matrix_layout, n, n, b, ldb ) ) {
67  return -9;
68  }
69  }
70 #endif
71  /* Additional scalars initializations for work arrays */
72  if( LAPACKE_lsame( balanc, 's' ) || LAPACKE_lsame( balanc, 'b' ) ) {
73  lrwork = MAX(1,6*n);
74  } else {
75  lrwork = MAX(1,2*n);
76  }
77  /* Allocate memory for working array(s) */
78  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
79  LAPACKE_lsame( sense, 'v' ) ) {
80  bwork = (lapack_logical*)
81  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
82  if( bwork == NULL ) {
84  goto exit_level_0;
85  }
86  }
87  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
88  LAPACKE_lsame( sense, 'v' ) ) {
89  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n+2) );
90  if( iwork == NULL ) {
92  goto exit_level_1;
93  }
94  }
95  rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
96  if( rwork == NULL ) {
98  goto exit_level_2;
99  }
100  /* Query optimal working array(s) size */
101  info = LAPACKE_zggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
102  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
103  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
104  rcondv, &work_query, lwork, rwork, iwork,
105  bwork );
106  if( info != 0 ) {
107  goto exit_level_3;
108  }
109  lwork = LAPACK_Z2INT( work_query );
110  /* Allocate memory for work arrays */
111  work = (lapack_complex_double*)
112  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
113  if( work == NULL ) {
115  goto exit_level_3;
116  }
117  /* Call middle-level interface */
118  info = LAPACKE_zggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
119  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
120  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
121  rcondv, work, lwork, rwork, iwork, bwork );
122  /* Release memory and exit */
123  LAPACKE_free( work );
124 exit_level_3:
125  LAPACKE_free( rwork );
126 exit_level_2:
127  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
128  LAPACKE_lsame( sense, 'v' ) ) {
129  LAPACKE_free( iwork );
130  }
131 exit_level_1:
132  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
133  LAPACKE_lsame( sense, 'v' ) ) {
134  LAPACKE_free( bwork );
135  }
136 exit_level_0:
137  if( info == LAPACK_WORK_MEMORY_ERROR ) {
138  LAPACKE_xerbla( "LAPACKE_zggevx", info );
139  }
140  return info;
141 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_double
Definition: lapack.h:63
#define lapack_logical
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
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 LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACK_Z2INT(x)
Definition: lapacke.h:50
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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