LAPACK  3.7.1
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 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  /* 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 #endif
70  /* Additional scalars initializations for work arrays */
71  if( LAPACKE_lsame( balanc, 's' ) || LAPACKE_lsame( balanc, 'b' ) ) {
72  lrwork = MAX(1,6*n);
73  } else {
74  lrwork = MAX(1,2*n);
75  }
76  /* Allocate memory for working array(s) */
77  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
78  LAPACKE_lsame( sense, 'v' ) ) {
79  bwork = (lapack_logical*)
80  LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
81  if( bwork == NULL ) {
83  goto exit_level_0;
84  }
85  }
86  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
87  LAPACKE_lsame( sense, 'v' ) ) {
88  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n+2) );
89  if( iwork == NULL ) {
91  goto exit_level_1;
92  }
93  }
94  rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
95  if( rwork == NULL ) {
97  goto exit_level_2;
98  }
99  /* Query optimal working array(s) size */
100  info = LAPACKE_zggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
101  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
102  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
103  rcondv, &work_query, lwork, rwork, iwork,
104  bwork );
105  if( info != 0 ) {
106  goto exit_level_3;
107  }
108  lwork = LAPACK_Z2INT( work_query );
109  /* Allocate memory for work arrays */
110  work = (lapack_complex_double*)
111  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
112  if( work == NULL ) {
114  goto exit_level_3;
115  }
116  /* Call middle-level interface */
117  info = LAPACKE_zggevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
118  lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
119  ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
120  rcondv, work, lwork, rwork, iwork, bwork );
121  /* Release memory and exit */
122  LAPACKE_free( work );
123 exit_level_3:
124  LAPACKE_free( rwork );
125 exit_level_2:
126  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
127  LAPACKE_lsame( sense, 'v' ) ) {
128  LAPACKE_free( iwork );
129  }
130 exit_level_1:
131  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
132  LAPACKE_lsame( sense, 'v' ) ) {
133  LAPACKE_free( bwork );
134  }
135 exit_level_0:
136  if( info == LAPACK_WORK_MEMORY_ERROR ) {
137  LAPACKE_xerbla( "LAPACKE_zggevx", info );
138  }
139  return info;
140 }
#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)
Here is the call graph for this function: