float64equals

Author: masx200

README.md

@@ -79,7 +79,7 @@ import {} from "https://gitee.com/masx200/leetcode-test/raw/master/mod.ts";
 ```
 
 ```ts
-import {} from "https://github.com/masx200/leetcode-test/raw/master/mod.ts";
+import {} from "https://raw.githubusercontent.com/masx200/leetcode-test/master/mod.ts";
 ```
 
 ```ts
@@ -93,7 +93,7 @@ import {} from "https://gitee.com/masx200/leetcode-test/raw/4.0.1/mod.ts";
 ```
 
 ```ts
-import {} from "https://github.com/masx200/leetcode-test/raw/4.0.1/mod.ts";
+import {} from "https://raw.githubusercontent.com/masx200/leetcode-test/4.0.1/mod.ts";
 ```
 
 ```ts

powx-n/test.ts

@@ -1,12 +1,14 @@
-import { assertAlmostEquals } from "../deps.ts";
+import { assert } from "../deps.ts";
 import { pow_x_n } from "../mod.ts";
+import { float64equals } from "../utils/float64equals.ts";
 
 Deno.test("powx-n", () => {
     const examples: {
         input: Parameters<typeof pow_x_n>;
         output: ReturnType<typeof pow_x_n>;
     }[] = [
         { input: [2.0, 10], output: 1024.0 },
+        { input: [100, 100], output: 1e200 },
         { input: [2.1, 3], output: 9.261 },
         { input: [2.0, -2], output: 0.25 },
         {
@@ -37,6 +39,6 @@ Deno.test("powx-n", () => {
         { input: [0, -Infinity], output: Infinity },
     ];
     examples.forEach(({ input, output }) => {
-        assertAlmostEquals(output, pow_x_n(...input));
+        assert(float64equals(output, pow_x_n(...input)));
     });
 });

utils/float64equals.ts

@@ -0,0 +1,10 @@
+export function float64equals(a: number, b: number): boolean {
+    // console.log(a, b);
+    if (!Number.isFinite(a) || !Number.isFinite(b)) {
+        return a === b;
+    }
+    if (b === 0) {
+        return a === b;
+    }
+    return Math.abs((a - b) / b) < 1e-14;
+}