+local pow = math.pow
+local kcat_attr_table = {}
+local pow_table = {}
+local fn_table = {} -- used in is_ucs_in_japanese_char_direct
+local nfn_table = {} -- used in is_ucs_in_japanese_char_node
+for i = 0, 31*ATTR_RANGE-1 do
+ local ka, pw = luatexbase.attributes['ltj@kcat'..floor(i/31)], 1/pow(2, i%31)
+ local jcr_noncjk = jcr_noncjk
+ kcat_attr_table[i], pow_table[i] = ka, pow(2, i%31)
+ fn_table[i] = function(p) return floor(has_attr(p, ka)*pw)%2 ~= jcr_noncjk end
+ nfn_table[i] = function(p) return floor(has_attr_node(p, ka)*pw)%2 ~= jcr_noncjk end
+end
+fn_table[-1] = function() return false end -- for char --U+007F
+nfn_table[-1] = function() return false end -- for char --U+007F
+pow_table[31*ATTR_RANGE] = pow(2, 31)