Need code for Williams Sentiment Index

I need the script, code for Williams Sentiment Index, please.

Thanks,

Liz Merrill

Here:
Williams %R source code

so williams %r or simple raw inverted scale of stochastic indicator is williams sentiment index? You sure???

No, I am not sure.
I just typed in Williams Sentiment source code into the Google search, and I chose a random hit.
You can do the same.

Why not look inside indicators.c?