Eliminate Array.Copy GC in SquareMatrix.

Assets/Cryville/Common/Math/SquareMatrix.cs

@@ -1,4 +1,4 @@
-using System;
+using UnsafeIL;
 
 namespace Cryville.Common.Math {
 	/// <summary>
@@ -44,7 +44,7 @@ namespace Cryville.Common.Math {
 		/// <param name="o">The column operator.</param>
 		public void Eliminate<T>(ColumnVector<T> v, ColumnVector<T> result, IVectorOperator<T> o) {
 			int s = Size;
-			Array.Copy(content, buffer, Size * Size);
+			FillBuffer();
 			for (int i = 0; i < s; i++) refl[i] = i;
 			for (int r = 0; r < s; r++) {
 				for (int r0 = r; r0 < s; r0++)
@@ -73,6 +73,11 @@ namespace Cryville.Common.Math {
 				result[refl[r2]] = v2;
 			}
 		}
+		unsafe void FillBuffer() {
+			fixed (void* ptrc = content, ptrb = buffer) {
+				Unsafe.CopyBlock(ptrb, ptrc, (uint)(Size * Size * sizeof(float)));
+			}
+		}
 		/// <summary>
 		/// Creates a square matrix and fills it with polynomial coefficients.
 		/// </summary>