import isnumber from "./isnumber";
import { ERRORTYPES as error } from "./error";Copyright 2015-2021 JC Fisher
import isnumber from "./isnumber";
import { ERRORTYPES as error } from "./error";ADD calculates the sum of two numbers.
export default function add(a, b) {Return #NA! if 2 arguments are not provided.
if (arguments.length !== 2) {
return error.na;
}Return #VALUE! if either a or b is not a number.
if (!isnumber(a) || !isnumber(b)) {
return error.value;
}Return the sum.
return a + b;
}