Has anyone calibrated MCP9700?

Hi, I am wondering if anyone has fully implemented the calibration of the MCP9700/MCP9800 family of temperature sensors in AVR C?

Microchip provides an app note, IC Temperature Sensor Accuracy Compensation with a PICmicro Microcontroller, complete with code. In PIC assembly :P. So before I go port the thing, I thought I'd ask around to see if anyone else has confronted this.

There is code on the playground, but only for rudimentary conversion, not the whole second-order calibration described in the app note.