1//! Padstack calculator — pad sizing for TH, BGA, and routing. 2//! 3//! 7 sub-calculators: 4//! 1. Thru-Hole Pad 5//! 2. BGA Land Size (IPC-7351A) 6//! 3. Conductor/Pad TH 7//! 4. Conductor/Pad BGA 8//! 5. 2 Conductors/Pad TH 9//! 6. 2 Conductors/Pad BGA 10//! 7. Corner to Corner