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 +1,74 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="Sqrt"
+// 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 partial class Scalar
+    {
+
+        public static unsafe float SeedSqrt(float x)
+        {
+            ArgumentOutOfRangeException.ThrowIfNegative(x);
+            if (x <= 1e-12) {
+                return 0;
+            }
+            uint a = *(uint*)&x;
+            uint f = a;
+            f >>= 23;
+            f /= 2;
+            f += 64;
+            a -= 0b_0011_1111_0000_0000_0000_0000_0000_0000;
+            uint e = a << 8;
+            e >>= 8;
+            e *= 0b_1101_0001;
+            e >>= 24;
+            e += 0b_0000_0000_0001_0000_1010_1000_1110_0010;
+            f <<= 23;
+            e += f;
+            float result = *(float*)&e;
+            result = (result + (x / result)) / 2;
+            return (result + (x / result)) / 2;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static float Sqrt(float x)
+        {
+            return MathF.Sqrt(x);
+            /**/
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static double Sqrt(double x)
+        {
+            return System.Math.Sqrt(x);
+        }
+
+    }
+}