From c185c836e0039e4355c8bff57c35a0ae53b78a4b Mon Sep 17 00:00:00 2001
From: Guang Hao Low <gulow@microsoft.com>
Date: Mon, 18 Nov 2019 19:15:40 -0800
Subject: [PATCH] Fix high-order Trotter bug

---
 Standard/src/Canon/Enumeration/Trotter.qs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Standard/src/Canon/Enumeration/Trotter.qs b/Standard/src/Canon/Enumeration/Trotter.qs
index b8229e14ff7..4fb51dcc067 100644
--- a/Standard/src/Canon/Enumeration/Trotter.qs
+++ b/Standard/src/Canon/Enumeration/Trotter.qs
@@ -138,7 +138,7 @@ namespace Microsoft.Quantum.Canon {
     /// Computes Trotter step size in recursive implementation of
     /// Trotter simulation algorithm.
     function _TrotterStepSize (order: Int) : Double {
-        return 1.0 / (4.0 - PowD(4.0, 1.0 / (2.0 * IntAsDouble(order) - 1.0)));
+        return 1.0 / (4.0 - PowD(4.0, 1.0 / (IntAsDouble(order) - 1.0)));
     }