diff -urN gcalctool-5.5.42.orig/ChangeLog gcalctool-5.5.42/ChangeLog
--- gcalctool-5.5.42.orig/ChangeLog	2005-05-24 10:09:23.000000000 +0200
+++ gcalctool-5.5.42/ChangeLog	2005-05-24 10:10:42.000000000 +0200
@@ -1,5 +1,5 @@
 
-/*   $Header$
+/*   $Header$
  *
  *  Copyright (c) 1987-2005 Sun Microsystems, Inc.
  *  All Rights Reserved.
@@ -8,6 +8,12 @@
 gcalctool change history.
 =========================
 
+2005-04-13 Rich Burridge <rich.burridge@sun.com>
+
+    * Fixed bug 172150 (http://bugzilla.gnome.org/show_bug.cgi?id=172150)
+      The exponential function (e^x) now works in arithmetic operator
+      precedence mode.
+
 2005-04-11 Rich Burridge <rich.burridge@sun.com>
 
     * Generated a version for the GNOME 2.10.1 call for tarballs.
diff -urN gcalctool-5.5.42.orig/gcalctool/ce_tokeniser.l gcalctool-5.5.42/gcalctool/ce_tokeniser.l
--- gcalctool-5.5.42.orig/gcalctool/ce_tokeniser.l	2005-05-24 10:09:23.000000000 +0200
+++ gcalctool-5.5.42/gcalctool/ce_tokeniser.l	2005-05-24 10:14:12.000000000 +0200
@@ -2,7 +2,7 @@
 
 %{
 
-/*  $Header$
+/*  $Header$
  *
  *  Copyright (C) 2004-2005 Sami Pietila
  *
@@ -36,7 +36,7 @@
 DECIMAL	"."|","
 SIGN	"+"|"-" 
 CHARACTER [a-z]|[A-Z]
-HEX     [0-9]|[A-F]|[a-f]
+HEX     [0-9]|[A-F]
 BIN     "0"|"1"
 OCT     [0-7]
 NUMBER  [DIGIT}*{DECIMAL}{DIGIT}+|{DIGIT}
diff -urN gcalctool-5.5.42.orig/gcalctool/Makefile.am gcalctool-5.5.42/gcalctool/Makefile.am
--- gcalctool-5.5.42.orig/gcalctool/Makefile.am	2005-05-24 10:09:23.000000000 +0200
+++ gcalctool-5.5.42/gcalctool/Makefile.am	2005-05-24 10:12:08.000000000 +0200
@@ -83,7 +83,7 @@
 	bison -d -p lr lr_parser.y
 
 lex.ce.c: ce_parser.tab.c ce_tokeniser.l
-	$(LEX) -i -Pce ce_tokeniser.l
+	$(LEX) -Pce ce_tokeniser.l
 
 lex.lr.c: lr_parser.tab.c lr_tokeniser.l
 	$(LEX) -i -Plr lr_tokeniser.l