buf.writeFloatBE(value[, offset])

• value <number> 要写入 buf 的数字。
• offset <integer> 开始写入之前要跳过的字节数。 必须满足 0 <= offset <= buf.length - 4。 默认值: 0。
• 返回: <integer> offset 加上写入的字节数。

将 value 作为大端序写入 buf 中指定的 offset。 当 value 不是 JavaScript 数字时，则行为未定义。

const buf = Buffer.allocUnsafe(4);

buf.writeFloatBE(0xcafebabe, 0);

console.log(buf);
// 打印: <Buffer 4f 4a fe bb>

• value <number> Number to be written to buf.
• offset <integer> Number of bytes to skip before starting to write. Must satisfy 0 <= offset <= buf.length - 4. Default: 0.
• Returns: <integer> offset plus the number of bytes written.

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

const buf = Buffer.allocUnsafe(4);

buf.writeFloatBE(0xcafebabe, 0);

console.log(buf);
// Prints: <Buffer 4f 4a fe bb>