Floating point constants and the first FP test routine.

src/obj.cpp

@@ -94,7 +94,9 @@ static uint64_t readParenExpression(const string &s, const map<string, Word> &d,
   exit(1);
 }
 
+int lexerBits;
 Obj *AsmReader::read(std::istream &input) {
+  lexerBits = wordSize;
   FlexLexer *f = new yyFlexLexer(&input);
   Obj *o = new Obj();
   std::vector<Chunk>::reverse_iterator cur;