diff -r fb699e8af79d -r b13c97dc8d56 stx_libbasic2.st
--- a/stx_libbasic2.st	Tue Dec 03 22:58:15 2019 +0100
+++ b/stx_libbasic2.st	Tue Dec 03 22:58:18 2019 +0100
@@ -396,7 +396,9 @@
 
 extensionMethodNames
     "lists the extension methods which are to be included in the project.
-     Entries are pairwise elements, consisting of class-name and selector."
+     Entries are 2-element array literals, consisting of class-name and selector.
+     A correponding method with real names must be present in my concrete subclasses
+     if it has extensions."
 
     ^ #(
         ArithmeticValue asQDouble
@@ -460,6 +462,7 @@
         Float asQDouble
         Float asQuadFloat
         Fraction asQuadFloat
+        Integer asIEEEFloat
         Integer asOctaFloat
         Integer asQDouble
         Integer asQuadFloat