public static Value largestOf(List<Value> values) {
            if (values.isEmpty()) return Value.DOUBLE; // Default
            Value largest = null;
            for (Value value : values) {
                if (largest == null)
                    largest = value;
                else
                    largest = largestOf(largest, value);
            }
            return largest;
        }
The permissible cell value types. Default is double.
vespajlib/src/main/java/com/yahoo/tensor/TensorType.java