Simplified sum aggregate

src/vector.c

@@ -1090,42 +1090,3 @@ vector_avg(PG_FUNCTION_ARGS)
 
 	PG_RETURN_POINTER(result);
 }
-
-/*
- * Sum vectors
- */
-PGDLLEXPORT PG_FUNCTION_INFO_V1(vector_sum);
-Datum
-vector_sum(PG_FUNCTION_ARGS)
-{
-	ArrayType  *statearray = PG_GETARG_ARRAYTYPE_P(0);
-	float8	   *statevalues;
-	float8		n;
-	uint16		dim;
-	Vector	   *result;
-
-	/* Check array before using */
-	statevalues = CheckStateArray(statearray, "vector_sum");
-	n = statevalues[0];
-
-	/* SQL defines AVG of no values to be NULL */
-	if (n == 0.0)
-		PG_RETURN_NULL();
-
-	/* Create vector */
-	dim = STATE_DIMS(statearray);
-	CheckDim(dim);
-	result = InitVector(dim);
-	for (int i = 0; i < dim; i++)
-	{
-		result->x[i] = statevalues[i + 1];
-
-		/* Check for overflow */
-		if (isinf(result->x[i]))
-			float_overflow_error();
-
-		CheckElement(result->x[i]);
-	}
-
-	PG_RETURN_POINTER(result);
-}