From 02833d11c3191282b7a05bca4e9f19a7b036980e Mon Sep 17 00:00:00 2001
From: Satoshi Kataoka <satok@google.com>
Date: Fri, 23 Aug 2013 14:32:24 +0900
Subject: [PATCH] Fix the autocorrection normalized score calculation

Bug: 10441240
Change-Id: I256021dc55481960d6a605046daa17b1a2d55b95
---
 native/jni/src/utils/autocorrection_threshold_utils.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/native/jni/src/utils/autocorrection_threshold_utils.cpp b/native/jni/src/utils/autocorrection_threshold_utils.cpp
index 3406e0f8e..1f8ee0814 100644
--- a/native/jni/src/utils/autocorrection_threshold_utils.cpp
+++ b/native/jni/src/utils/autocorrection_threshold_utils.cpp
@@ -83,9 +83,12 @@ const int AutocorrectionThresholdUtils::FULL_WORD_MULTIPLIER = 2;
         return 0.0f;
     }
 
+    if (score <= 0 || distance >= afterLength) {
+        // normalizedScore must be 0.0f (the minimum value) if the score is less than or equal to 0,
+        // or if the edit distance is larger than or equal to afterLength.
+        return 0.0f;
+    }
     // add a weight based on edit distance.
-    // distance <= max(afterLength, beforeLength) == afterLength,
-    // so, 0 <= distance / afterLength <= 1
     const float weight = 1.0f - static_cast<float>(distance) / static_cast<float>(afterLength);
 
     // TODO: Revise the following logic thoroughly by referring to...