static inline int PopLZWStack ( LZWStack * stack_info ) {
 if ( stack_info -> index <= stack_info -> codes ) return ( - 1 ) ;
 stack_info -> index -- ;
 return ( ( int ) * stack_info -> index ) ;
 }
static inline int PopLZWStack ( LZWStack * stack_info ) {
 if ( stack_info -> index <= stack_info -> codes ) return ( - 1 ) ;
 stack_info -> index -- ;
 return ( ( int ) * stack_info -> index ) ;
 }