#ifndef BFI_LOGIC_INCLUDED
#define BFI_LOGIC_INCLUDED


float when_eq(float x, float y) {
  return 1.0 - abs(sign(x - y));
}

float when_neq(float x, float y) {
  return abs(sign(x - y));
}

float when_gt(float x, float y) {
  return max(sign(x - y), 0.0);
}

float when_lt(float x, float y) {
  return max(sign(y - x), 0.0);
}

float when_ge(float x, float y) {
  return 1.0 - when_lt(x, y);
}

float when_le(float x, float y) {
  return 1.0 - when_gt(x, y);
}

float and(float a, float b) {
  return a * b;
}

float or(float a, float b) {
  return min(a + b, 1.0);
}

float xor(float a, float b) {
  return (a + b) % 2.0;
}

float not(float a) {
  return 1.0 - a;
}



#endif