Removed "throws ArithmeticException" from the signature of FieldEleme…

…nt<T>.divide(T), as this contract was too restrictive, and indeed broken by nearly all implementations of FieldElement<T>. See MATH-755.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1293898 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/math3/FieldElement.java

@@ -63,10 +63,8 @@ public interface FieldElement<T> {
     /** Compute this &divide; a.
      * @param a element to add
      * @return a new element representing this &divide; a
-     * @exception ArithmeticException if a is the zero of the
-     * additive operation (i.e. additive identity)
      */
-    T divide(T a) throws ArithmeticException;
+    T divide(T a);
 
     /**
      * Returns the multiplicative inverse of {@code this} element.