diff -r 44ff2a6fcadc -r 990ecb883731 lib/iec_std_lib.h
--- a/lib/iec_std_lib.h	Fri Sep 02 18:15:55 2011 +0200
+++ b/lib/iec_std_lib.h	Fri Sep 02 18:16:33 2011 +0200
@@ -1089,10 +1089,11 @@
   /*    EXPT    */
   /**************/
 #define __expt_(TYPENAME)\
-static inline TYPENAME __expt_##TYPENAME(EN_ENO_PARAMS, TYPENAME IN1, REAL IN2){\
+static inline TYPENAME __expt_##TYPENAME(EN_ENO_PARAMS, TYPENAME IN1, LREAL IN2){\
   TEST_EN(TYPENAME)\
   return pow(IN1, IN2);\
-}ANY_REAL(__expt_)
+}
+ANY_REAL(__expt_)
 
 /**************/
 /* Selection  */