char_type CYC_FIXNUM_MAX CYC_FIXNUM_MIN is_object_type is_value_type obj_char2obj obj_int2obj obj_is_char obj_is_int obj_obj2char obj_obj2int

#define obj_obj2char (   x )    (char_type)((uintptr_t)(x)>>2) Convert from an object to a char.