void FourArithmeticInfinity(){
		// 足し算
		// 無限大に数値を足す
		float additionToInf = Mathf.Infinity + 1.0e+38f;
		Debug.Log("additionToInf : " + additionToInf);

		// 無限大に無限大を足す
		float additionInfToInf = Mathf.Infinity + Mathf.Infinity;
		Debug.Log("additionInfToInf : " + additionInfToInf);


		// 引き算
		// 無限大から数値を引く
		float subtractionFromInf = Mathf.Infinity - 1.0e+38f;
		Debug.Log("subtractionFromInf : " + subtractionFromInf);

		// 無限大から無限大を引く
		float subtractionInfFromInf = Mathf.Infinity - Mathf.Infinity;
		Debug.Log("subtractionInfFromInf : " + subtractionInfFromInf);


		// 掛け算
		// 無限大に数値を掛ける
		float multiplicationInf = Mathf.Infinity * 1.0e+38f;
		Debug.Log("multiplicationInf : " + multiplicationInf);

		// 無限大に無限大を掛ける
		float multiplicationInfByInf = Mathf.Infinity * Mathf.Infinity;
		Debug.Log("multiplicationInfByInf : " + multiplicationInfByInf);

		// 無限大に0を掛ける
		float multiplicationInfByZero = Mathf.Infinity * 0f;
		Debug.Log("multiplicationInfByZero : " + multiplicationInfByZero);


		// 割り算
		// 無限大を数値で割る
		float divisionInf = Mathf.Infinity / 1.0e+38f;
		Debug.Log("divisionInf : " + divisionInf);

		// 無限大を無限大で割る
		float divisionInfByInf = Mathf.Infinity / Mathf.Infinity;
		Debug.Log("divisionInfByInf : " + divisionInfByInf);

		// 無限大を0で割る
		float divisionInfByZero = Mathf.Infinity / 0f;
		Debug.Log("divisionInfByZero : " + divisionInfByZero);
	}