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Assets/CoolapeFrame/Scripts/toolkit/ArrayEx.cs

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+using System;
+using UnityEngine;
+
+namespace Coolape
+{
+	public static class ArrayEx
+	{
+		public static int BinarySearch (this int[] array, int low, int high, int val)
+		{
+			while (low <= high) {
+				int midpoint = (int)(((uint)high + (uint)low) >> 1);
+				int v = array [midpoint];
+				if (val == v) {
+					return midpoint;
+				} else if (val < v)
+					high = midpoint - 1;
+				else
+					low = midpoint + 1;
+			}
+			return -1;
+		}
+
+		public static void Fill (this float[] array, float v)
+		{
+			for (int i = 0; i < array.Length; i++) {
+				array [i] = v;
+			}
+		}
+
+		public static void Fill (this double[] array, double v)
+		{
+			for (int i = 0; i < array.Length; i++) {
+				array [i] = v;
+			}
+		}
+	
+		public static void Write2Matlab (this float[] array, string filename, string varname)
+		{
+			System.IO.StreamWriter file = new System.IO.StreamWriter (filename);
+			file.WriteLine (varname + "=[");
+			for (int c = 0; c < array.Length; c++) {
+				file.WriteLine (array [c]); 
+			}
+			file.WriteLine ("];");
+			file.Close ();
+		}
+	
+		public static void CopyTo (this float[] array, float[] dest)
+		{
+			Array.Copy (array, dest, array.Length);
+		}
+
+		public static void CopyTo (this double[] array, double[] dest)
+		{
+			Array.Copy (array, dest, array.Length);
+		}
+
+		public static float Sum (this float[] array)
+		{
+			float sum = 0.0f;
+			for (int i = 0; i < array.Length; i++) {
+				sum += array [i];
+			}
+			return sum;
+		}
+
+		public static double Sum (this double[] array)
+		{
+			double sum = 0.0f;
+			for (int i = 0; i < array.Length; i++) {
+				sum += array [i];
+			}
+			return sum;
+		}
+	
+		public static float Max (this float[] array)
+		{
+			float max = -float.MaxValue;
+			for (int i = 0; i < array.Length; i++) {
+				max = Mathf.Max (array [i], max);
+			}
+			return max;
+		}
+
+		public static float MaxDelta (this float[] x, float[] y)
+		{
+			float change = 0.0f;
+			for (int i = 0; i < x.Length; i++) {
+				change = Mathf.Max (Math.Abs (x [i] - y [i]), change);
+			}
+			return change;
+		}
+
+		public static double Max (this double[] array)
+		{
+			double max = -float.MaxValue;
+			for (int i = 0; i < array.Length; i++) {
+				max = Math.Max (array [i], max);
+			}
+			return max;
+		}
+
+		public static double MaxDelta (this double[] x, double[] y)
+		{
+			double change = 0.0f;
+			for (int i = 0; i < x.Length; i++) {
+				change = Math.Max (Math.Abs (x [i] - y [i]), change);
+			}
+			return change;
+		}
+
+		public static void MultiplyWith (this float[] x, float[] y)
+		{
+			for (int i = 0; i < x.Length; i++) {
+				x [i] *= y [i];
+			}
+		}
+
+		public static void MultiplyWith (this float[] x, float y)
+		{
+			for (int i = 0; i < x.Length; i++) {
+				x [i] *= y;
+			}
+		}
+
+		public static void DivideBy (this float[] x, float[] y)
+		{
+			for (int i = 0; i < x.Length; i++) {
+				x [i] /= y [i];
+			}
+		}
+
+		public static float Dot (this float[] x, float[] y)
+		{
+			float dotProduct = 0.0f;
+			for (int i = 0; i < x.Length; i++) {
+				dotProduct += x [i] * y [i]; 
+			}
+			return dotProduct;
+		}
+
+		public static void MultiplyWith (this double[] x, double[] y)
+		{
+			for (int i = 0; i < x.Length; i++) {
+				x [i] *= y [i];
+			}
+		}
+
+		public static void MultiplyWith (this double[] x, double y)
+		{
+			for (int i = 0; i < x.Length; i++) {
+				x [i] *= y;
+			}
+		}
+
+		public static void DivideBy (this double[] x, double[] y)
+		{
+			for (int i = 0; i < x.Length; i++) {
+				x [i] /= y [i];
+			}
+		}
+
+		public static double Dot (this double[] x, double[] y)
+		{
+			double dotProduct = 0.0f;
+			for (int i = 0; i < x.Length; i++) {
+				dotProduct += x [i] * y [i]; 
+			}
+			return dotProduct;
+		}
+
+		public static string ToStringPretty (this float[] x)
+		{
+			string res = "[";
+			for (int i = 0; i < x.Length; i++) {
+				res += x [i] + ", ";
+			}
+			res += "]";
+			return res;
+		}
+	}
+}