Mathf.Sign

설명

Returns the sign of f.

Return value is 1 when f is positive or zero, -1 when f is negative.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Example() {
        Debug.Log(Mathf.Sign(-10));
        Debug.Log(Mathf.Sign(10));
    }
}