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[bpt/portal.git] / balance.sig

diff --git a/balance.sig b/balance.sig
index 06726a5..7d47b90 100644 (file)
--- a/balance.sig
+++ b/balance.sig
@@ -1,6 +1,6 @@
 signature BALANCE =
 sig
-    type balance = {id :int, name : string, amount : real}
+    type balance = {id : int, name : string, amount : real}
 
     val addBalance : string -> int
     val lookupBalance : int -> balance
@@ -10,9 +10,13 @@ sig
     val listOwnedBalances : unit -> balance list
     val listUnownedBalances : unit -> balance list
     val listBalanceUsers : int -> Init.user list
+    val listNegativeOwnedBalances : unit -> balance list
 
     val validBalanceName : string -> bool
     val balanceNameToId : string -> int option
 
     val sumOwnedBalances : unit -> real
+    val isNegative : balance -> bool
+
+    val depositAmount : int -> real
 end