enmergency update on 20230213 by nitload youmu, fix a file damage

源代码/.Net/StgSharpDebug/Program.cs

@@ -12,7 +12,7 @@ internal class Program
         /**/
 
         /*
-        float test = StgSharp.Math.ACos(0.5f);
+        float test = StgSharp.Math.Calc.ATan(-1f,-1f);
         Console.WriteLine(test);
         /**/
 
@@ -26,7 +26,7 @@ internal class Program
             stopwatch.Start(); //  开始监视代码运行时间
             for (float i = 2; i < time; i++)
             {
-                a = StgSharp.Math.ACos(i/500000-1);
+                a = StgSharp.Math.ATan(i);
             }
             stopwatch.Stop(); //  停止监视
             TimeSpan timespan = stopwatch.Elapsed; //  获取当前实例测量得出的总时间
@@ -40,7 +40,7 @@ internal class Program
             stopwatch1.Start();
             for (float i = 2; i < time2; i++)
             {
-                b = System.MathF.Acos(i / 500000 - 1);
+                b = System.MathF.Atan(i);
             }
             stopwatch1.Stop();
             timespan = stopwatch1.Elapsed;
@@ -54,11 +54,11 @@ internal class Program
         /*
          //精度测试
         double accuracy = 0;
-        for (float i = -10f; i < 200f; i += 0.01f)
+        for (float i = -200f; i < 200f; i += 0.01f)
         {
             
-            double r1 = StgSharp.Math.ACos(i/100);
-            double r2 = 180*System.Math.Acos(i/100)/3.1415926;
+            double r1 = StgSharp.Math.ATan(i);
+            double r2 = 180*System.Math.Atan(i)/3.1415926;
             double ac = ( System.Math.Max(r1,r2)- System.Math.Min(r1, r2) ) / r2;
             if (ac>accuracy)
             {