added more floating point stubs

c64/basic/,stubs_math/af87.math_stub.s

@@ -0,0 +1,14 @@
+// #LAYOUT# STD *       #TAKE
+// #LAYOUT# *   BASIC_0 #TAKE
+// #LAYOUT# *   *       #IGNORE
+
+//
+// Math package - set rest of FAC1 and JMP to $b8d2
+//
+// See also:
+// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
+//
+
+// XXX add name, label, implement, test
+
+	STUB_IMPLEMENTATION()