bug fixes

[IRC.git] / Robust / src / ClassLibrary / Math.java

diff --git a/Robust/src/ClassLibrary/Math.java b/Robust/src/ClassLibrary/Math.java
index 789ccb4f3385fbb4fd78b5138f66f9f3d07041a3..e55c0cf5acbb19ae79917aabe804fece8f5fb7d2 100644 (file)
--- a/Robust/src/ClassLibrary/Math.java
+++ b/Robust/src/ClassLibrary/Math.java
@@ -1,52 +1,28 @@
 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 static final double PI=3.14159265358979323846;
+    
+    public static double fabs(double x) {
+       if (x < 0) {
+           return -x;
+       } else {
+           return x;
        }
+    }
+    
+    public static float abs(float a) {
+       if (a<0)
+           return -a;
+       else return a;
+    }
 
-       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;
-       }
+    public static native double sin(double a);
+    public static native double cos(double a);
+    public static native double asin(double a);
+    public static native double acos(double a);
+    public static native double tan(double a);
+    public static native double atan(double a);
+    public static native double exp(double a);
+    public static native double sqrt(double a);
+    public static native double log(double a);
+    public static native double pow(double a, double b);
 }