error when porting C code to Python (bitwise manipulation)

[Jordan]

if after the first step (u += 0xe91aaa35) you apply this function:

invert = lambda x: ~int(hex(0xffffffff - x)[0:-1],16)

it returns the correct value (corrected the overflow)

but there is still something wrong, still looking into it, if someone
knows how to do this, feel free to comment :)