From bde1f3c632556fdfa4ac210fa0b7994a76c5a911 Mon Sep 17 00:00:00 2001
From: DeckerSU <support@decker.su>
Date: Mon, 27 Jan 2020 05:00:24 +0300
Subject: [PATCH] limit blockchain progress to a max of 1.000000

Issue: https://github.com/zcash/zcash/issues/3161
Fix commit: https://github.com/zcash/zcash/pull/4176/commits/b3594b52739c96105a3f6976924a9075b1c5bbe2
---
 src/checkpoints.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/checkpoints.cpp b/src/checkpoints.cpp
index 7fd94e4e7..026475f88 100644
--- a/src/checkpoints.cpp
+++ b/src/checkpoints.cpp
@@ -74,7 +74,7 @@ namespace Checkpoints {
             fWorkAfter = nExpensiveAfter*fSigcheckVerificationFactor;
         }
 
-        return fWorkBefore / (fWorkBefore + fWorkAfter);
+        return std::min(fWorkBefore / (fWorkBefore + fWorkAfter), 1.0);
     }
 
     int GetTotalBlocksEstimate(const CChainParams::CCheckpointData& data)