【UnityC#】Math.Sqrt、Mathf.Sqrtの速度比較

Math.Sqrt、Mathf.Sqrtの速度比較をしたので結果を残しておきます。

[ 環境 ]

Unity 2018.4.14.f1

[ 比較結果 ]

Math.Sqrt	4 ms
Mathf.Sqrt	21 ms

[ スクリプト ]

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;

public class PerformanceComparison : MonoBehaviour
{
    void Start()
    {
        System.Diagnostics.Stopwatch StopWatch = new System.Diagnostics.Stopwatch();

        int Count = 1000000;

        //Math.Sqrt

        StopWatch.Restart();

        for(float i = 0; i < Count; i++)
        {
            float Temporary = (float)Math.Sqrt(i);
        }

        Debug.Log(StopWatch.ElapsedMilliseconds);

        //Mathf.Sqrt

        StopWatch.Restart();

        for(float i = 0; i < Count; i++)
        {
            float Temporary = Mathf.Sqrt(i);
        }

        Debug.Log(StopWatch.ElapsedMilliseconds);
    }
}

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