ikr7.netでさらにアレ.js

f = function(x){
	if(-7 < x && x < 7){
		p = Math.ceil(Math.abs(x) * 10) % 4
		d = 10;
		ds = 1;
		if(p % 2 == 0){
			if(-5 < x && x < 5){
				if(p == 0){
					d = 5;
				}
			}else{
				if(p == 0){
					return 0;
				}
			}
		}else{
			if(p == 1){
				d = 5;
				ds = -1;
			}else{
				ds = -1;
			}
		}
		s = Math.acos(x/d)
		y = Math.sin(s);
		return y * d * ds;
	}else{
		p = Math.ceil(Math.abs(x) * 10) % 3
		if(p == 2){
			return -x;
		}else if(p == 1){
			return 0;
		}else if(p == 0){
			return x;
		}
	}
};

ikr7.netでアレ.js

f = function(x){
	p = Math.ceil(Math.abs(x) * 10) % 4
	d = 10;
	ds = 1;
	if(-5 < x && x < 5){
		if(p % 2 == 0){
			if(p == 0){
				d = 5;
			}
		}else{
			if(p == 1){
				d = 5;
				ds = -1;
			}else{
				ds = -1;
			}
		}
	}else{
		if(p % 2 == 0){
			ds = -1;
		}
	}
	s = Math.acos(x/d)
	y = Math.sin(s);
	return y * d * ds;
};

ikr7.netで円.js

f = function(x){
 r = 10;
 s = Math.acos(x/10)
 y = Math.sin(s);
 if(Math.ceil(x * 10) % 2 == 0){
  return y * 10;
 }else{
  return -y * 10;
 }
};