#include "arith.h"

int Arith_max(int x, int y) {
  return x > y ? x : y;
}

int Arith_min(int x, int y) {
  return x > y ? y : x;
}

int Arith_div(int x, int y) {
  if (/* division truncates toward 0 */ -13/5 == -2
  && /* x and y have different signs */ (x < 0) != (y < 0)
  && x%y != 0)
    return x/y - 1;
  else
    return x/y;
}

int Arith_mod(int x, int y) {
  return x - y*Arith_div(x, y);
}

int Arith_floor(int x, int y) {
  return Arith_div(x, y);
}

int Arith_ceiling(int x, int y) {
  return Arith_div(x, y) + (x%y != 0);
}