Index: pages/lang.in
==================================================================
--- pages/lang.in
+++ pages/lang.in
@@ -2310,10 +2310,31 @@
   right rather than the left.  ^If Z is negative then
   the abs(Z) characters preceding the Y-th character are returned.
   ^If X is a string then characters indices refer to actual UTF-8 
   characters.  ^If X is a BLOB then the indices refer to bytes.
 }
+
+funcdef {tointeger(X)} {} {
+  If X is an integer then tointeger(X) returns X.
+  If X is a floating point number or a string that can be losslessly converted 
+  into a 64-bit signed integer then tointeger(X) returns that integer.
+  If X is NULL or a BLOB or a floating point number that cannot be represented as a
+  64-bit signed integer or a string that contains whitespace or a string that
+  does not describe a 64-bit signed integer, then tointeger(X) returns NULL.
+}
+
+funcdef {toreal(X)} {} {
+  If X is a floating point number then toreal(X) returns X.
+  If X is an integer that can be converted into a 64-bit IEEE-754 floating point
+  number with no loss of precision, then toreal(X) returns that number.
+  If X is a string that describes a floating point number, then toreal(X)
+  returns that number or a close approximation.
+  If X is NULL or a BLOB or an integer that is too large to be losslessly
+  converted into a 64-bit IEEE-754 number or a string that contains whitespace
+  or a string that does not describe a floating point value, then
+  toreal(X) returns NULL.
+}
 
 funcdef {total_changes()} {} {
   ^The total_changes() function returns the number of row changes
   caused by INSERT, UPDATE or DELETE
   statements since the current database connection was opened.