buf.readDoubleBE([offset])

版本历史
版本变更
v10.0.0

删除了 noAssert 并且不再隐式强制将偏移量强制转换为 uint32。

v0.11.15

新增于: v0.11.15

  • offset <integer> 开始读取之前要跳过的字节数。 必须满足 0 <= offset <= buf.length - 8。 默认值: 0。
  • 返回: <number>

从指定 offset 处的 buf 读取 64 位大端序双精度值。

import { Buffer } from 'node:buffer';

const buf = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);

console.log(buf.readDoubleBE(0));
// 打印: 8.20788039913184e-304const { Buffer } = require('node:buffer');

const buf = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);

console.log(buf.readDoubleBE(0));
// 打印: 8.20788039913184e-304
History
VersionChanges
v10.0.0

Removed noAssert and no implicit coercion of the offset to uint32 anymore.

v0.11.15

Added in: v0.11.15

  • offset <integer> Number of bytes to skip before starting to read. Must satisfy 0 <= offset <= buf.length - 8. Default: 0.
  • Returns: <number>

Reads a 64-bit, big-endian double from buf at the specified offset.

import { Buffer } from 'node:buffer';

const buf = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);

console.log(buf.readDoubleBE(0));
// Prints: 8.20788039913184e-304const { Buffer } = require('node:buffer');

const buf = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);

console.log(buf.readDoubleBE(0));
// Prints: 8.20788039913184e-304