+const unsigned TINFO_color = 0x000b1000U;
+// reserved up to 0x000b10ffU
+// for color algebras (only used for return_type_tinfo())
+const unsigned TINFO_clifford = 0x000b1100U;
+// reserved up to 0x000b11ffU
+// for clifford algebras (only used for return_type_tinfo())