Cast a 10 bit unsigned integer to a signed integer in python

int, python, uint

Solution

Naivest possible solution:

def convert(x):
    if x >= 512:
        x -= 1024
    return x

Problem

I have a list of numbers in the range 0-1023. I would like to convert them to integers such that 1023 maps to -1, 1022 maps to -2 etc.. while 0, 1, 2, ....511 remain unchanged. I came up with a simple: ``` def convert(x): return (x - 2**9) % 2**10 - 2**9 ``` is there a better way?

Original source