LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ 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 );
124exit_level_3:
125 LAPACKE_free( rwork );
126exit_level_2:
127 if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
128 LAPACKE_lsame( sense, 'v' ) ) {
129 LAPACKE_free( iwork );
130 }
131exit_level_1:
132 if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
133 LAPACKE_lsame( sense, 'v' ) ) {
134 LAPACKE_free( bwork );
135 }
136exit_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:87
#define lapack_complex_double
Definition: lapack.h:64
#define lapack_logical
Definition: lapack.h:103
#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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