Index: plugins/fn-eng/functions.c
===================================================================
--- plugins/fn-eng/functions.c	(revision 17064)
+++ plugins/fn-eng/functions.c	(working copy)
@@ -160,7 +160,7 @@
 	if (v >= b10 / 2) /* N's complement */
 		v = v - b10;
 
-	if (dest_base == 10)
+	if (dest_base == 10 && aplaces == NULL)
 		return value_new_int (v);
 
 	if (v < 0) {
