Mathf.FloorToInt

Description

Returns the largest integer smaller to or equal to f.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    void Example()
    {
        Debug.Log(Mathf.FloorToInt(10.0F));  // Prints  10
        Debug.Log(Mathf.FloorToInt(10.2F));  // Prints  10
        Debug.Log(Mathf.FloorToInt(10.7F));  // Prints  10
        Debug.Log(Mathf.FloorToInt(-10.0F)); // Prints -10
        Debug.Log(Mathf.FloorToInt(-10.2F)); // Prints -11
        Debug.Log(Mathf.FloorToInt(-10.7F)); // Prints -11
    }
}