From 76fc7e982c9579fdfeea5502e7289530094df9c4 Mon Sep 17 00:00:00 2001
From: Mikhail Kalinin <kalinin128@gmail.com>
Date: Tue, 22 Aug 2017 15:32:43 +0600
Subject: [PATCH] Replace Math.pow with simple * operator in ModExp precompile

---
 .../src/main/java/org/ethereum/vm/PrecompiledContracts.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ethereumj-core/src/main/java/org/ethereum/vm/PrecompiledContracts.java b/ethereumj-core/src/main/java/org/ethereum/vm/PrecompiledContracts.java
index c4479d2c01..cd3aa5d6e3 100644
--- a/ethereumj-core/src/main/java/org/ethereum/vm/PrecompiledContracts.java
+++ b/ethereumj-core/src/main/java/org/ethereum/vm/PrecompiledContracts.java
@@ -254,7 +254,7 @@ public byte[] execute(byte[] data) {
 
         private long getMultComplexity(long x) {
 
-            long x2 = (long) Math.pow(x, 2);
+            long x2 = x * x;
 
             if (x <= 64)    return x2;
             if (x <= 1024)  return x2 / 4 + 96 * x - 3072;