test(vectors): add benchmarks

packages/vectors/bench/index.js

@@ -0,0 +1,56 @@
+const Benchmark = require("benchmark");
+const vec = require("../index");
+
+const setS2Lib = (buf, n) => {
+    n *= 2;
+    for (let i = 0; i < n; i += 2) {
+        vec.setS2(buf, i, i + 1, i);
+    }
+    return buf;
+};
+
+const setS2Plain = (n) => {
+    const res = new Array(n);
+    for (let i = 0; i < n; i++) {
+        res[i] = [i, i + 1];
+    }
+    return res;
+};
+
+const op2Lib = (buf, n, op, v) =>
+    vec.transformVectors1(op, setS2Lib(buf, n), v, n, 0, 0, 1, 1, 2);
+
+const op2Plain = (n, op, v) => {
+    const res = setS2Plain(n);
+    for (let i = 0; i < n; i++) {
+        op(res[i], v);
+    }
+    return res;
+};
+
+const add2 = (a, b) => (
+    a[0] += b[0],
+    a[1] += b[1],
+    a
+);
+
+new Benchmark.Suite()
+    .add({ name: "set2 1k (lib, array)", fn: () => setS2Lib(new Array(2 * 1024), 1024) })
+    .add({ name: "set2 1k (vanilla)", fn: () => setS2Plain(1024) })
+    .add({ name: "set2 4k (lib, array)", fn: () => setS2Lib(new Array(2 * 4 * 1024), 4 * 1024) })
+    .add({ name: "set2 4k (vanilla)", fn: () => setS2Plain(4 * 1024) })
+    .add({ name: "add2 1k (lib, array)", fn: () => op2Lib(new Array(2 * 1024), 1024, vec.add2, [10, 20]) })
+    .add({ name: "add2 1k (lib, f32)", fn: () => op2Lib(new Float32Array(2 * 1024), 1024, vec.add2, [10, 20]) })
+    .add({ name: "add2 1k (lib, f64)", fn: () => op2Lib(new Float64Array(2 * 1024), 1024, vec.add2, [10, 20]) })
+    .add({ name: "add2 1k (vanilla)", fn: () => op2Plain(1024, add2, [10, 20]) })
+    .add({ name: "add2 4k (lib, array)", fn: () => op2Lib(new Array(2 * 4 * 1024), 4 * 1024, vec.add2, [10, 20]) })
+    .add({ name: "add2 4k (lib, f32)", fn: () => op2Lib(new Float32Array(2 * 4 * 1024), 4 * 1024, vec.add2, [10, 20]) })
+    .add({ name: "add2 4k (lib, f64)", fn: () => op2Lib(new Float64Array(2 * 4 * 1024), 4 * 1024, vec.add2, [10, 20]) })
+    .add({ name: "add2 4k (vanilla)", fn: () => op2Plain(4 * 1024, add2, [10, 20]) })
+    .on("cycle", (event) =>
+        console.log(
+            event.target.toString(),
+            `mean: ${(event.target.stats.mean * 1e3).toFixed(5)}sec`
+        )
+    )
+    .run({ "async": false });

packages/vectors/package.json

@@ -22,6 +22,7 @@
     "devDependencies": {
         "@types/mocha": "^5.2.5",
         "@types/node": "^10.5.5",
+        "benchmark": "^2.1.4",
         "mocha": "^5.2.0",
         "nyc": "^12.0.2",
         "typedoc": "^0.11.1",
@@ -44,4 +45,4 @@
     "publishConfig": {
         "access": "public"
     }
-}
+}