Version: 2017.2
public static int FloorToInt (float f);

説明

f 以下の最大の整数を返します。

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void Example() { Debug.Log(Mathf.FloorToInt(10.0F)); Debug.Log(Mathf.FloorToInt(10.2F)); Debug.Log(Mathf.FloorToInt(10.7F)); Debug.Log(Mathf.FloorToInt(-10.0F)); Debug.Log(Mathf.FloorToInt(-10.2F)); Debug.Log(Mathf.FloorToInt(-10.7F)); } }