@thi.ng/vectors/mean.js

Optimized 2d/3d/4d and arbitrary length vector operations, support for memory mapping/layouts

import { add } from "./add.js";
import { __ensureInputs } from "./ensure.js";
import { mulN } from "./muln.js";
import { set } from "./set.js";
import { sum } from "./sum.js";
const mean = (out, src) => {
  __ensureInputs(src);
  out = set(out || [], src[0]);
  for (let i = src.length; i-- > 1; ) {
    add(out, out, src[i]);
  }
  return mulN(out, out, 1 / src.length);
};
const vmean = (a) => a.length > 0 ? sum(a) / a.length : 0;
export {
  mean,
  vmean
};