From 5ba16a5db209fcb1e0166eda5da39ee33bac18d2 Mon Sep 17 00:00:00 2001
From: adash <adash>
Date: Tue, 11 Dec 2007 22:26:58 +0000
Subject: [PATCH] Math classlibrary

---
 Robust/src/ClassLibrary/Math.java | 52 +++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 Robust/src/ClassLibrary/Math.java

diff --git a/Robust/src/ClassLibrary/Math.java b/Robust/src/ClassLibrary/Math.java
new file mode 100644
index 00000000..789ccb4f
--- /dev/null
+++ b/Robust/src/ClassLibrary/Math.java
@@ -0,0 +1,52 @@
+public class Math {
+	//public static final double PI=3.14159265358979323846;
+
+	public double fabs(double x) {
+		if (x < 0) {
+			return -x;
+		} else {
+			return x;
+		}
+	}
+
+	public double sin(double rad) {
+		double app;
+		double diff;
+		int inc = 1;
+		double PI=3.14159265358979323846;
+
+		while( rad > 2*PI ) rad -= 2*PI;
+		while( rad < -2*PI ) rad += 2*PI;
+		app = diff = rad;
+		diff = (diff * (-(rad*rad))) / ((2.0 * inc) * (2.0 * inc + 1.0));
+		app = app + diff;
+		inc++;
+		while( fabs(diff) >= 0.00001 ) {
+			diff = (diff * (-(rad*rad))) / ((2.0 * inc) * (2.0 * inc + 1.0));
+			app = app + diff;
+			inc++;
+		}
+		return app;
+	}
+
+	public double cos(double rad) {
+		double app;
+		double diff;
+		int inc = 1;
+		double PI=3.14159265358979323846;
+
+		rad += PI/2.0;
+		while( rad > 2*PI ) rad -= 2*PI;
+		while( rad < -2*PI ) rad += 2*PI;
+		app = diff = rad;
+		diff = (diff * (-(rad*rad))) / ((2.0 * inc) * (2.0 * inc + 1.0));
+		app = app + diff;
+		inc++;
+		while( fabs(diff) >= 0.00001 ) {
+			diff = (diff * (-(rad*rad))) / ((2.0 * inc) * (2.0 * inc + 1.0));
+			app = app + diff;
+			inc++;
+		}
+		return app;
+	}
+}
-- 
2.34.1