LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_zgeevx.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_zgeevx (int matrix_order, char balanc, char jobvl, char jobvr, char sense, lapack_int n, lapack_complex_double *a, lapack_int lda, lapack_complex_double *w, lapack_complex_double *vl, lapack_int ldvl, lapack_complex_double *vr, lapack_int ldvr, lapack_int *ilo, lapack_int *ihi, double *scale, double *abnrm, double *rconde, double *rcondv)

Function/Subroutine Documentation

lapack_int LAPACKE_zgeevx ( int  matrix_order,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double w,
lapack_complex_double vl,
lapack_int  ldvl,
lapack_complex_double vr,
lapack_int  ldvr,
lapack_int ilo,
lapack_int ihi,
double *  scale,
double *  abnrm,
double *  rconde,
double *  rcondv 
)

Definition at line 36 of file lapacke_zgeevx.c.

{
lapack_int info = 0;
lapack_int lwork = -1;
double* rwork = NULL;
lapack_complex_double* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_zgeevx", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_zge_nancheck( matrix_order, n, n, a, lda ) ) {
return -7;
}
#endif
/* Allocate memory for working array(s) */
rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
if( rwork == NULL ) {
goto exit_level_0;
}
/* Query optimal working array(s) size */
info = LAPACKE_zgeevx_work( matrix_order, balanc, jobvl, jobvr, sense, n, a,
lda, w, vl, ldvl, vr, ldvr, ilo, ihi, scale,
abnrm, rconde, rcondv, &work_query, lwork,
rwork );
if( info != 0 ) {
goto exit_level_1;
}
lwork = LAPACK_Z2INT( work_query );
/* Allocate memory for work arrays */
if( work == NULL ) {
goto exit_level_1;
}
/* Call middle-level interface */
info = LAPACKE_zgeevx_work( matrix_order, balanc, jobvl, jobvr, sense, n, a,
lda, w, vl, ldvl, vr, ldvr, ilo, ihi, scale,
abnrm, rconde, rcondv, work, lwork, rwork );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_1:
LAPACKE_free( rwork );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_zgeevx", info );
}
return info;
}

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