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

lapack_int LAPACKE_zhgeqz (int matrix_order, char job, char compq, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, lapack_complex_double *h, lapack_int ldh, lapack_complex_double *t, lapack_int ldt, lapack_complex_double *alpha, lapack_complex_double *beta, lapack_complex_double *q, lapack_int ldq, lapack_complex_double *z, lapack_int ldz)

Function/Subroutine Documentation

lapack_int LAPACKE_zhgeqz ( int  matrix_order,
char  job,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
lapack_complex_double h,
lapack_int  ldh,
lapack_complex_double t,
lapack_int  ldt,
lapack_complex_double alpha,
lapack_complex_double beta,
lapack_complex_double q,
lapack_int  ldq,
lapack_complex_double z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_zhgeqz.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_zhgeqz", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_zge_nancheck( matrix_order, n, n, h, ldh ) ) {
return -8;
}
if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
if( LAPACKE_zge_nancheck( matrix_order, n, n, q, ldq ) ) {
return -14;
}
}
if( LAPACKE_zge_nancheck( matrix_order, n, n, t, ldt ) ) {
return -10;
}
if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
if( LAPACKE_zge_nancheck( matrix_order, n, n, z, ldz ) ) {
return -16;
}
}
#endif
/* Allocate memory for working array(s) */
rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
if( rwork == NULL ) {
goto exit_level_0;
}
/* Query optimal working array(s) size */
info = LAPACKE_zhgeqz_work( matrix_order, job, compq, compz, n, ilo, ihi, h,
ldh, t, ldt, alpha, beta, q, ldq, z, ldz,
&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_zhgeqz_work( matrix_order, job, compq, compz, n, ilo, ihi, h,
ldh, t, ldt, alpha, beta, q, ldq, z, ldz, 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_zhgeqz", info );
}
return info;
}

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