LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_zgges.c File Reference
#include "lapacke_utils.h"
Include dependency graph for lapacke_zgges.c:

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Functions/Subroutines

lapack_int LAPACKE_zgges (int matrix_order, char jobvsl, char jobvsr, char sort, LAPACK_Z_SELECT2 selctg, lapack_int n, lapack_complex_double *a, lapack_int lda, lapack_complex_double *b, lapack_int ldb, lapack_int *sdim, lapack_complex_double *alpha, lapack_complex_double *beta, lapack_complex_double *vsl, lapack_int ldvsl, lapack_complex_double *vsr, lapack_int ldvsr)

Function/Subroutine Documentation

lapack_int LAPACKE_zgges ( int  matrix_order,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_Z_SELECT2  selctg,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
lapack_complex_double b,
lapack_int  ldb,
lapack_int sdim,
lapack_complex_double alpha,
lapack_complex_double beta,
lapack_complex_double vsl,
lapack_int  ldvsl,
lapack_complex_double vsr,
lapack_int  ldvsr 
)

Definition at line 36 of file lapacke_zgges.c.

{
lapack_int info = 0;
lapack_int lwork = -1;
lapack_logical* bwork = NULL;
double* rwork = NULL;
lapack_complex_double* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_zgges", -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;
}
if( LAPACKE_zge_nancheck( matrix_order, n, n, b, ldb ) ) {
return -9;
}
#endif
/* Allocate memory for working array(s) */
if( LAPACKE_lsame( sort, 's' ) ) {
bwork = (lapack_logical*)
LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
if( bwork == NULL ) {
goto exit_level_0;
}
}
rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,8*n) );
if( rwork == NULL ) {
goto exit_level_1;
}
/* Query optimal working array(s) size */
info = LAPACKE_zgges_work( matrix_order, jobvsl, jobvsr, sort, selctg, n, a,
lda, b, ldb, sdim, alpha, beta, vsl, ldvsl, vsr,
ldvsr, &work_query, lwork, rwork, bwork );
if( info != 0 ) {
goto exit_level_2;
}
lwork = LAPACK_Z2INT( work_query );
/* Allocate memory for work arrays */
if( work == NULL ) {
goto exit_level_2;
}
/* Call middle-level interface */
info = LAPACKE_zgges_work( matrix_order, jobvsl, jobvsr, sort, selctg, n, a,
lda, b, ldb, sdim, alpha, beta, vsl, ldvsl, vsr,
ldvsr, work, lwork, rwork, bwork );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_2:
LAPACKE_free( rwork );
exit_level_1:
if( LAPACKE_lsame( sort, 's' ) ) {
LAPACKE_free( bwork );
}
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_zgges", info );
}
return info;
}

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