# define HB_LOW_PRIORITY 0
# define HB_NORMAL_PRIORITY 0
#elif defined( SYS_CYGWIN )
# define HB_LOW_PRIORITY 0
# define HB_NORMAL_PRIORITY 1
# define HB_LOW_PRIORITY 0
# define HB_NORMAL_PRIORITY 0
#elif defined( SYS_CYGWIN )
# define HB_LOW_PRIORITY 0
# define HB_NORMAL_PRIORITY 1