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113 lines
2.9 KiB
JavaScript
113 lines
2.9 KiB
JavaScript
// deno-fmt-ignore-file
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// deno-lint-ignore-file
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.
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// Taken from Node 18.12.1
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// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
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'use strict';
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require('../common');
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const assert = require('assert');
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// Test 32 bit float
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const buffer = Buffer.alloc(4);
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buffer[0] = 0;
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buffer[1] = 0;
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buffer[2] = 0x80;
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buffer[3] = 0x3f;
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assert.strictEqual(buffer.readFloatBE(0), 4.600602988224807e-41);
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assert.strictEqual(buffer.readFloatLE(0), 1);
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buffer[0] = 0;
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buffer[1] = 0;
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buffer[2] = 0;
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buffer[3] = 0xc0;
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assert.strictEqual(buffer.readFloatBE(0), 2.6904930515036488e-43);
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assert.strictEqual(buffer.readFloatLE(0), -2);
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buffer[0] = 0xff;
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buffer[1] = 0xff;
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buffer[2] = 0x7f;
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buffer[3] = 0x7f;
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assert.ok(Number.isNaN(buffer.readFloatBE(0)));
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assert.strictEqual(buffer.readFloatLE(0), 3.4028234663852886e+38);
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buffer[0] = 0xab;
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buffer[1] = 0xaa;
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buffer[2] = 0xaa;
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buffer[3] = 0x3e;
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assert.strictEqual(buffer.readFloatBE(0), -1.2126478207002966e-12);
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assert.strictEqual(buffer.readFloatLE(0), 0.3333333432674408);
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buffer[0] = 0;
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buffer[1] = 0;
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buffer[2] = 0;
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buffer[3] = 0;
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assert.strictEqual(buffer.readFloatBE(0), 0);
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assert.strictEqual(buffer.readFloatLE(0), 0);
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assert.ok(1 / buffer.readFloatLE(0) >= 0);
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buffer[3] = 0x80;
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assert.strictEqual(buffer.readFloatBE(0), 1.793662034335766e-43);
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assert.strictEqual(buffer.readFloatLE(0), -0);
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assert.ok(1 / buffer.readFloatLE(0) < 0);
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buffer[0] = 0;
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buffer[1] = 0;
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buffer[2] = 0x80;
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buffer[3] = 0x7f;
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assert.strictEqual(buffer.readFloatBE(0), 4.609571298396486e-41);
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assert.strictEqual(buffer.readFloatLE(0), Infinity);
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buffer[0] = 0;
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buffer[1] = 0;
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buffer[2] = 0x80;
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buffer[3] = 0xff;
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assert.strictEqual(buffer.readFloatBE(0), 4.627507918739843e-41);
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assert.strictEqual(buffer.readFloatLE(0), -Infinity);
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['readFloatLE', 'readFloatBE'].forEach((fn) => {
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// Verify that default offset works fine.
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buffer[fn](undefined);
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buffer[fn]();
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['', '0', null, {}, [], () => {}, true, false].forEach((off) => {
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assert.throws(
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() => buffer[fn](off),
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{ code: 'ERR_INVALID_ARG_TYPE' }
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);
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});
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[Infinity, -1, 1].forEach((offset) => {
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assert.throws(
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() => buffer[fn](offset),
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{
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code: 'ERR_OUT_OF_RANGE',
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name: 'RangeError',
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message: 'The value of "offset" is out of range. ' +
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`It must be >= 0 and <= 0. Received ${offset}`
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});
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});
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assert.throws(
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() => Buffer.alloc(1)[fn](1),
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{
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code: 'ERR_BUFFER_OUT_OF_BOUNDS',
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name: 'RangeError',
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message: 'Attempt to access memory outside buffer bounds'
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});
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[NaN, 1.01].forEach((offset) => {
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assert.throws(
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() => buffer[fn](offset),
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{
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code: 'ERR_OUT_OF_RANGE',
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name: 'RangeError',
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message: 'The value of "offset" is out of range. ' +
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`It must be an integer. Received ${offset}`
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});
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});
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});
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