READ_DATA_PENDING_COUNT 133 io.c           #    define READ_DATA_PENDING_COUNT(fp) ((fp)->_IO_read_end - (fp)->_IO_read_ptr)
READ_DATA_PENDING_COUNT 137 io.c           #    define READ_DATA_PENDING_COUNT(fp) ((fp)->_egptr - (fp)->_gptr)
READ_DATA_PENDING_COUNT 142 io.c           #  define READ_DATA_PENDING_COUNT(fp) ((fp)->FILE_COUNT)
READ_DATA_PENDING_COUNT 145 io.c           #  define READ_DATA_PENDING_COUNT(fp) ((fp)->FILE_READEND - (fp)->FILE_READPTR)