LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zggev()

lapack_int LAPACKE_zggev ( int  matrix_layout,
char  jobvl,
char  jobvr,
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 
)

Definition at line 35 of file lapacke_zggev.c.

42{
43 lapack_int info = 0;
44 lapack_int lwork = -1;
45 double* rwork = NULL;
46 lapack_complex_double* work = NULL;
47 lapack_complex_double work_query;
48 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49 LAPACKE_xerbla( "LAPACKE_zggev", -1 );
50 return -1;
51 }
52#ifndef LAPACK_DISABLE_NAN_CHECK
53 if( LAPACKE_get_nancheck() ) {
54 /* Optionally check input matrices for NaNs */
55 if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
56 return -5;
57 }
58 if( LAPACKE_zge_nancheck( matrix_layout, n, n, b, ldb ) ) {
59 return -7;
60 }
61 }
62#endif
63 /* Allocate memory for working array(s) */
64 rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,8*n) );
65 if( rwork == NULL ) {
67 goto exit_level_0;
68 }
69 /* Query optimal working array(s) size */
70 info = LAPACKE_zggev_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
71 alpha, beta, vl, ldvl, vr, ldvr, &work_query,
72 lwork, rwork );
73 if( info != 0 ) {
74 goto exit_level_1;
75 }
76 lwork = LAPACK_Z2INT( work_query );
77 /* Allocate memory for work arrays */
78 work = (lapack_complex_double*)
79 LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
80 if( work == NULL ) {
82 goto exit_level_1;
83 }
84 /* Call middle-level interface */
85 info = LAPACKE_zggev_work( matrix_layout, jobvl, jobvr, n, a, lda, b, ldb,
86 alpha, beta, vl, ldvl, vr, ldvr, work, lwork,
87 rwork );
88 /* Release memory and exit */
89 LAPACKE_free( work );
90exit_level_1:
91 LAPACKE_free( rwork );
92exit_level_0:
93 if( info == LAPACK_WORK_MEMORY_ERROR ) {
94 LAPACKE_xerbla( "LAPACKE_zggev", info );
95 }
96 return info;
97}
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_double
Definition: lapack.h:64
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
lapack_int LAPACKE_zggev_work(int matrix_layout, char jobvl, char jobvr, 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_complex_double *work, lapack_int lwork, double *rwork)
#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
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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