util: DistSq()

A utility function for calculating the distance squared between two
contacts. Future CLs will use these functions.

BUG=None
TEST=unittest

Change-Id: I742f3da8ac1f44812763cff84bcb32ded661e01b
3 files changed
tree: 7aab98463624dbfdf84a05125c87896217f95e1d
  1. include/
  2. keyboard_touchpad_helper/
  3. src/
  4. tools/
  5. .gitignore
  6. LICENSE
  7. Makefile