Fix histogram indexing when accessed via operator [] (#939)

ETLCPP · Jul 31, 2024 · f01edbc · f01edbc
1 parent 211b8c2
commit f01edbc
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/include/etl/histogram.h b/include/etl/histogram.h
@@ -249,7 +249,7 @@ namespace etl
     //*********************************
     value_type operator [](key_type key) const
     {
-      return this->accumulator[key];
+      return this->accumulator[key - Start_Index];
     }
   };
 
@@ -373,7 +373,7 @@ namespace etl
     //*********************************
     value_type operator [](key_type key) const
     {
-      return this->accumulator[key];
+      return this->accumulator[key - start_index];
     }
 
   private:

diff --git a/test/test_histogram.cpp b/test/test_histogram.cpp
@@ -247,7 +247,7 @@ namespace
 
       for (size_t i = 0UL; i < output1.size(); ++i)
       {
-        CHECK_EQUAL(int(output1[i]), int(histogram[i]));
+        CHECK_EQUAL(int(output1[i]), int(histogram[i - 4]));
       }
     }