[add some more ToExpression instances
John Meacham <john@repetae.net>**20100320001034
 Ignore-this: 27fafe7a4c355fa6cf2a14f62774dd10
] hunk ./src/C/Generate.hs 695
+instance ToExpression Int where
+    toExpression c = constant $ number $ fromIntegral c
+
+instance ToExpression Integer where
+    toExpression c = constant $ number c
+
+instance ToExpression Bool where
+    toExpression b = toExpression $ if b then cTrue else cFalse