lapacke_dtgevc.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_dtgevc (int matrix_layout, char side, char howmny, const lapack_logical *select, lapack_int n, const double *s, lapack_int lds, const double *p, lapack_int ldp, double *vl, lapack_int ldvl, double *vr, lapack_int ldvr, lapack_int mm, lapack_int *m)

Function Documentation

LAPACKE_dtgevc()

lapack_int LAPACKE_dtgevc	(	int	matrix_layout,
		char	side,
		char	howmny,
		const lapack_logical *	select,
		lapack_int	n,
		const double *	s,
		lapack_int	lds,
		const double *	p,
		lapack_int	ldp,
		double *	vl,
		lapack_int	ldvl,
		double *	vr,
		lapack_int	ldvr,
		lapack_int	mm,
		lapack_int *	m )

Definition at line 35 of file lapacke_dtgevc.c.

{
    lapack_int info = 0;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dtgevc", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_dge_nancheck( matrix_layout, n, n, p, ldp ) ) {
            return -8;
        }
        if( LAPACKE_dge_nancheck( matrix_layout, n, n, s, lds ) ) {
            return -6;
        }
        if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
            if( LAPACKE_dge_nancheck( matrix_layout, n, mm, vl, ldvl ) ) {
                return -10;
            }
        }
        if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
            if( LAPACKE_dge_nancheck( matrix_layout, n, mm, vr, ldvr ) ) {
                return -12;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,6*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_dtgevc_work( matrix_layout, side, howmny, select, n, s, lds,
                                p, ldp, vl, ldvl, vr, ldvr, mm, m, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dtgevc", info );
    }
    return info;
}