add functionality for decimal Exponents

src/exponent.c

@@ -23,6 +23,10 @@ double expIN(double e, double num){
         else{
             return  (1.0 / expI((e*-1), num));
         }   
+    }else{
+        if(e>0){
+            return exponential(e*logN(num, 0.000001));
+        }
     }
     return 0;
 }