1 files changed, 11 insertions, 0 deletions
diff --git a/src/include/taler_amount_lib.h b/src/include/taler_amount_lib.h
index a1f6c7d3..c1f42e47 100644
--- a/src/include/taler_amount_lib.h
+++ b/src/include/taler_amount_lib.h
@@ -161,6 +161,17 @@ TALER_amount_set_zero (const char *cur,
 
 
 /**
+ * Test if the given @a amount is zero.
+ *
+ * @param amount amount to compare to zero
+ * @return true if the amount is zero,
+ *         false if it is non-zero or invalid
+ */
+bool
+TALER_amount_is_zero (const struct TALER_Amount *amount);
+
+
+/**
  * Test if the given amount is valid.
  *
  * @param amount amount to check