Where can I find code examples for a PID controller using the PIC16F161x Math Accelerator?

Where can I find code examples for a PID controller using the Math Accelerator (MathAcc) on the PIC16F/LF161x family devices?

In the code for the following application notes:

Parts equipped with Math Accelerator with PID include: PIC16F1614 / PIC16F1615 / PIC16F1618 / PIC16F1619 PIC16LF1614 / PIC16LF1615 / PIC16LF1618 / PIC16LF1619

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