1 files changed, 8 insertions, 0 deletions
diff --git a/vespajlib/src/main/java/com/yahoo/tensor/DimensionSizes.java b/vespajlib/src/main/java/com/yahoo/tensor/DimensionSizes.java
index daa85cc51e4..7570a357452 100644
--- a/vespajlib/src/main/java/com/yahoo/tensor/DimensionSizes.java
+++ b/vespajlib/src/main/java/com/yahoo/tensor/DimensionSizes.java
@@ -29,6 +29,14 @@ public final class DimensionSizes {
     /** Returns the number of dimensions this provides the size of */
     public int dimensions() { return sizes.length; }
 
+    /** Returns the product of the sizes of this */
+    public int totalSize() {
+        int productSize = 1;
+        for (int dimensionSize : sizes )
+            productSize *= dimensionSize;
+        return productSize;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (o == this) return true;