@thi.ng/vectors/dots.js

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

import { compile } from "./compile/emit.js";
import { DOT, SARGS_V } from "./compile/templates.js";
const dotS = (a, b, n, ia = 0, ib = 0, sa = 1, sb = 1) => {
  let sum = 0;
  for (; n-- > 0; ia += sa, ib += sb) sum += a[ia] * b[ib];
  return sum;
};
const $ = (dim) => compile(dim, DOT, `o,a,${SARGS_V}`, "o,a", "", "+", "return ", ";", true);
const dotS2 = $(2);
const dotS3 = $(3);
const dotS4 = $(4);
export {
  dotS,
  dotS2,
  dotS3,
  dotS4
};