arrange of proj structure

2026-02-27 17:09:13 +08:00
parent 15434ed053
commit a798ab07f1
173 changed files with 32304 additions and 33955 deletions
@@ -0,0 +1,107 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="ACos"
+// Project: StgSharp
+// AuthorGroup: Nitload
+// Copyright (c) Nitload. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using System;
+using System.Runtime.CompilerServices;
+
+namespace StgSharp.Mathematics
+{
+    public static unsafe partial class Scalar
+    {
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static unsafe float ACos(float x)
+        {
+            return MathF.Acos(x);
+
+            /*
+                        int sign = 1;
+                        float y;
+
+                        if (x < 0)
+                        {
+                            sign = -1;
+                            y = -x;
+                        }
+                        else
+                        {
+                            y = x;
+                        }
+
+                        if (x > 1)
+                        {
+                            throw new ArgumentException();
+                        }
+
+                        float r, s, u, vec = 0.0f;
+                        bool transform = (y >= 0.5f);
+
+                        if (transform)
+                        {
+                            r = 0.5f * (1.0f - y);
+                            s = Scaler.Sqrt(r);
+                            y = s;
+                        }
+                        else
+                        {
+                            r = y * y;
+                        }
+                        u = r * (0.184161606965100694821398249421F +
+                               (-0.0565298683201845211985026327361F +
+                               (-0.0133819288943925804214011424456F -
+                               0.00396137437848476485201154797087F * r) * r) * r) /
+                              (1.10496961524520294485512696706F -
+                               0.836411276854206731913362287293F * r);
+                        /*
+
+            if (transform)
+            {
+                float c, s1, p, q;
+                uint us;
+
+                us = *(uint*)&s;
+                uint uss = us & 0xffff0000;
+                s1 = *(float*)&uss;
+
+                c = (r - s1 * s1) / (s + s1);
+                p = 2.0F * s * u - (piby2_tail - 2.0F * c);
+                q = hpiby2_head - 2.0F * s1;
+                vec = hpiby2_head - (p - q);
+            }
+            else
+            {
+                vec = y + y * u;
+            }
+
+            vec = sign * vec;
+
+            return piby2 - vec;
+            */
+        }
+
+    }
+}