content: /*
   * Created on Oct 23, 2010
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
   * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
   * specific language governing permissions and limitations under the License.
   *
   * Copyright @2010-2013 the original author or authors.
   */
  package org.fest.assertions.core;
  
  import org.fest.assertions.data.Offset;
  
  /**
   * Assertion methods applicable to floating-point <code>{@link Number}</code>s.
   *
   * @param <T> the type of the "actual" value.
   * @param <S> the self type of the assertion objects.
   *
   * @author Alex Ruiz
   * @author Yvonne Wang
   */
  public interface FloatingPointNumberAssert<S, T extends Number> {
  
    /**
     * Verifies that the actual value is equal to the given one, within a positive offset.
     *
     * @param expected the given value to compare the actual value to.
     * @param offset the given positive offset.
     * @return {@code this} assertion object.
     * @throws NullPointerException if the given offset is {@code null}.
     * @throws NullPointerException if the expected number is {@code null}.
     * @throws AssertionError if the actual value is not equal to the given one.
     */
    S isEqualTo(T expected, Offset<T> offset);
  
    /**
     * Verifies that the actual value is not equal to the given one.
     *
     * @param expected the given value to compare the actual value to.
     * @return {@code this} assertion object.
     * @throws NullPointerException if the expected number is {@code null}.
     * @throws AssertionError if the actual value is not equal to the given one.
     */
    S isNotEqualTo(T expected);
  
    /**
     * Verifies that the actual value is equal to {@code NaN}.
     *
     * @return this assertion object.
     * @throws AssertionError if the actual value is not equal to {@code NaN}.
     */
    S isNaN();
  
    /**
     * Verifies that the actual value is not equal to {@code NaN}.
     *
     * @return this assertion object.
     * @throws AssertionError if the actual value is equal to {@code NaN}.
     */
    S isNotNaN();
  }
  