There exist two zeroes: +0 (or just 0) and -0.
Write a function that returns `true` if the input number is -0 and `false` otherwise (`True` and `False` for Python).
In JavaScript / TypeScript / Coffeescript the input will be a number.
In Python / Java / C / NASM / Haskell / the input will be a float.
import struct

def is_negative_zero(n):
    return struct.pack('>d', n) == b'\x80\x00\x00\x00\x00\x00\x00\x00'
import struct

def is_negative_zero(n):
    return struct.pack('>d', n) == b'\x80\x00\x00\x00\x00\x00\x00\x00'