Add more tests

test/libsolidity/semanticTests/fixedPoint/arrays.sol

@@ -0,0 +1,16 @@
+contract C {
+    function f() public pure returns (fixed[2] memory ret) {
+        ret[0] = 0.00000000000001;
+        ret[1] = 11111111111111.1;
+    }
+    function g() public pure returns (fixed[] memory ret) {
+        ret = new fixed(3);
+        ret[0] = 998.888888;
+        ret[1] = 44.1100000000011;
+        ret[2] = 888888888888888888.4400001;
+    }
+}
+// ----
+// f() ->
+// g() ->
+

test/libsolidity/semanticTests/fixedPoint/constants.sol

@@ -0,0 +1,8 @@
+contract C {
+       function f() public pure returns (fixed) {
+        return 99.101 * 3.1;
+    }
+}
+// ----
+// f() ->
+

test/libsolidity/semanticTests/fixedPoint/state_variables.sol

@@ -8,4 +8,5 @@ contract C {
     }
 }
 // ----
+// z() ->
 // f() ->

test/libsolidity/semanticTests/fixedPoint/variables.sol

@@ -0,0 +1,11 @@
+contract C {
+    function f() public pure returns (fixed) {
+        return 1.33;
+    }
+    function g(fixed f1, fixed f2) public pure returns (fixed, fixed, fixed) {
+        return (f2, 0.0000333, f1);
+    }
+}
+// ----
+// f() ->
+// g(fixed128x80,fixed128x80): 9.871, 88888888.0 ->