libemath Extra math for C. Example #include <stdio.h> #include "src/point.h" int main (int argc, char *argv[]) { point a, b; a = point_init (1, 2); b = point_init (3, 4); a = point_add (&a, &b); printf ("%i, %i\n", a.x, a.y); return 0; }