lapacke_ztgexc.c

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* Contents: Native high-level C interface to LAPACK function ztgexc
* Author: Intel Corporation
*****************************************************************************/
 
#include "lapacke_utils.h"
 
lapack_int LAPACKE_ztgexc( int matrix_layout, lapack_logical wantq,
                           lapack_logical wantz, lapack_int n,
                           lapack_complex_double* a, lapack_int lda,
                           lapack_complex_double* b, lapack_int ldb,
                           lapack_complex_double* q, lapack_int ldq,
                           lapack_complex_double* z, lapack_int ldz,
                           lapack_int ifst, lapack_int ilst )
{
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_ztgexc", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_zge_nancheck( matrix_layout, n, n, a, lda ) ) {
            return -5;
        }
        if( LAPACKE_zge_nancheck( matrix_layout, n, n, b, ldb ) ) {
            return -7;
        }
        if( wantq ) {
            if( LAPACKE_zge_nancheck( matrix_layout, n, n, q, ldq ) ) {
                return -9;
            }
        }
        if( wantz ) {
            if( LAPACKE_zge_nancheck( matrix_layout, n, n, z, ldz ) ) {
                return -11;
            }
        }
    }
#endif
    return LAPACKE_ztgexc_work( matrix_layout, wantq, wantz, n, a, lda, b, ldb,
                                q, ldq, z, ldz, ifst, ilst );
}