#define IN_LIBXML
#include "libxml.h"
struct _xmlLink
{
    struct _xmlLink *next;
    struct _xmlLink *prev;
    void *data;
};
static int xmlLinkCompare(const void *data0, const void *data1);
static int 
xmlLinkCompare(const void *data0, 
               const void *data1)
{
    if (data0 < data1)
        return (-1);
    else if (data0 == data1)
        return (0);
    return (1);
}