diff --git a/cs019/get-cs019-names.rkt b/cs019/get-cs019-names.rkt
new file mode 100644
index 0000000..3250ee6
--- /dev/null
+++ b/cs019/get-cs019-names.rkt
@@ -0,0 +1,33 @@
+#lang racket/base
+
+;; Grabs all the names exported by the real cs019 language, so we can
+;; compare and see what names are missing from our implementation.
+(require racket/set)
+
+(provide cs019-names
+         whalesong-cs019-names
+         missing-cs019-names)
+
+
+(define-namespace-anchor anchor)
+(define ns (namespace-anchor->namespace anchor))
+
+
+(require (prefix-in cs019: (planet cs019/cs019/cs019)))
+(define cs019-names 
+  (for/set ([name (namespace-mapped-symbols ns)]
+             #:when (regexp-match #rx"^cs019:" (symbol->string name)))
+    (string->symbol
+     (substring (symbol->string name) (string-length "cs019:")))))
+
+
+(require (prefix-in whalesong-cs019: "cs019.rkt"))
+(define whalesong-cs019-names 
+  (for/set ([name (namespace-mapped-symbols ns)]
+             #:when (regexp-match #rx"^whalesong-cs019:" (symbol->string name)))
+    (string->symbol
+     (substring (symbol->string name) (string-length "whalesong-cs019:")))))
+
+
+(define missing-cs019-names
+  (set-subtract cs019-names whalesong-cs019-names))
\ No newline at end of file
diff --git a/cs019/info.rkt b/cs019/info.rkt
new file mode 100644
index 0000000..c78a926
--- /dev/null
+++ b/cs019/info.rkt
@@ -0,0 +1,4 @@
+#lang setup/infotab
+(define compile-omit-paths '("get-cs019-names.rkt"))
+
+
diff --git a/js-assembler/runtime-src/baselib-primitives.js b/js-assembler/runtime-src/baselib-primitives.js
index 475911b..0d35591 100644
--- a/js-assembler/runtime-src/baselib-primitives.js
+++ b/js-assembler/runtime-src/baselib-primitives.js
@@ -16,6 +16,7 @@
     var isNumber = baselib.numbers.isNumber;
 
     var isReal = baselib.numbers.isReal;
+    var isInexact = baselib.numbers.isInexact;
     var isComplex = baselib.numbers.isComplex;
     var isRational = baselib.numbers.isRational;
 
@@ -25,6 +26,7 @@
     var isList = baselib.lists.isList;
     var isString = baselib.strings.isString;
     var isSymbol = baselib.symbols.isSymbol;
+    var isBox = baselib.boxes.isBox;
     var equals = baselib.equality.equals;
 
     var NULL = baselib.lists.EMPTY;
@@ -147,6 +149,7 @@
     installPrimitiveConstant('null', NULL);
     installPrimitiveConstant('true', true);
     installPrimitiveConstant('false', false);
+    installPrimitiveConstant('eof', baselib.constants.EOF_VALUE);
 
 
     // The parameter keys here must be uninterned symbols, so we explicitly
@@ -1331,6 +1334,21 @@
             return rev;
         });
 
+    installPrimitiveProcedure(
+        'void?',
+        1,
+        function(M) {
+            return M.e[M.e.length -1] === VOID;
+        });
+
+
+    installPrimitiveProcedure(
+        'box?',
+        1,
+        function(M) {
+            return isBox(M.e[M.e.length -1]);
+        });
+
 
     installPrimitiveProcedure(
         'eof-object?',
@@ -1352,6 +1370,14 @@
 	function(M) {
 	    return isReal(M.e[M.e.length - 1]);
 	});
+
+    installPrimitiveProcedure(
+	'inexact?',
+	1,
+	function(M) {
+	    return isInexact(M.e[M.e.length - 1]);
+	});
+
     installPrimitiveProcedure(
 	'complex?',
 	1,
@@ -1400,9 +1426,21 @@
         });
 
 
+    installPrimitiveProcedure(
+        'inexact->exact',
+        1,
+        function (M) {
+            return baselib.numbers.toExact(
+                checkNumber(M, 'inexact->exact', 0));
+        });
 
-
-
+    installPrimitiveProcedure(
+        'exact->inexact',
+        1,
+        function (M) {
+            return baselib.numbers.toInexact(
+                checkNumber(M, 'exact->inexact', 0));
+        });
 
     installPrimitiveProcedure(
         'abs',
diff --git a/lang/kernel.rkt b/lang/kernel.rkt
index 2defc63..d95b7fa 100644
--- a/lang/kernel.rkt
+++ b/lang/kernel.rkt
@@ -81,6 +81,7 @@
 (provide pi
          e
          null
+         eof
          #%plain-module-begin
 	 #%module-begin
 	 #%datum
@@ -296,8 +297,8 @@ exn-continuation-marks
   angle
   magnitude
   conjugate
-  ;;  inexact->exact
-  ;;  exact->inexact
+  inexact->exact
+  exact->inexact
   number->string
   string->number
   procedure?
@@ -306,7 +307,7 @@ exn-continuation-marks
   procedure-rename
   ;;  (undefined? -undefined?)
 ;;  immutable?
-;;  void?
+void?
 symbol?
 string?
 char?
@@ -323,13 +324,13 @@ rational?
 integer?
 exact?
 exact-nonnegative-integer?
-;;  inexact?
+inexact?
 odd?
 even?
 zero?
 positive?
 negative?
-;;  box?
+box?
 ;;  hash?
 
   equal?