buffer.Buffer.writeDoubleBE

value: number,

offset?: number

): number;

Writes value to buf at the specified offset as big-endian. The value must be a JavaScript number. Behavior is undefined when value is anything other than a JavaScript number.

import { Buffer } from 'node:buffer';

const buf = Buffer.allocUnsafe(8);

buf.writeDoubleBE(123.456, 0);

console.log(buf);
// Prints: <Buffer 40 5e dd 2f 1a 9f be 77>

@param value

Number to be written to buf.

@param offset

Number of bytes to skip before starting to write. Must satisfy 0 <= offset <= buf.length - 8.

@returns

offset plus the number of bytes written.