From c898a1e13b1f06dafec35051dfd232510bd28de3 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 15 Mar 2020 20:42:47 +0100
Subject: clean up closer logic, improve error handling, simplify logic, add
 comments

---
 src/util/amount.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/util/amount.c')

diff --git a/src/util/amount.c b/src/util/amount.c
index e443a0d24..fb5a41d74 100644
--- a/src/util/amount.c
+++ b/src/util/amount.c
@@ -709,6 +709,13 @@ int
 TALER_amount_round_down (struct TALER_Amount *amount,
                          const struct TALER_Amount *round_unit)
 {
+  if (GNUNET_OK !=
+      TALER_amount_cmp_currency (amount,
+                                 round_unit))
+  {
+    GNUNET_break (0);
+    return GNUNET_SYSERR;
+  }
   if ( (0 != round_unit->fraction) &&
        (0 != round_unit->value) )
   {
-- 
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