ElPresidentePoole

#include <math.h> // include this at the top of your .c file

Vector2 get_vector_towards_position(Vector2 from, Vector2 to) {
  int dx = from.x - to.x;
  int dy = from.y - to.y;
  double angle_between_points = atan2(dy, dx);
  return (Vector2){-cos(angle_between_points), -sin(angle_between_points)};
}

ElPresidentePoole

#!/usr/bin/env sh

UPDATE_COUNT=$(xbps-install -SMnu | wc -l)
notify-send "$UPDATE_COUNT updates are available for install."