I would like to implement Chirp signal using C code

Do you have any idea how can I do it?

![enter image description here][1]

***Edit***

Goal is to send this signal to an DAC Component (µC intern or external peripheral). 
But I need fast sample rate like 10 Msamples or 20 Msamples.
FPGA is not provided, any other µC is possible


  [1]: https://i.sstatic.net/r55Ir.png