src/main/java/org/fest/assertions/internal/Floats.java
public void assertIsNaN(Description description, Float actual) {
    comparables.assertEqual(description, actual, Float.NaN);
  }
public void assertIsNaN(Description description, Float actual) {
    comparables.assertEqual(description, actual, Float.NaN);
  }
public void assertIsNaN ( Description description , Float actual ) { comparables . assertEqual ( description , actual , Float . NaN ) ; }
Verifies that the actual value is equal to {@code NaN}.

@param description the description of the <em>actual</em> value.
@param actual the <em>actual</em> value.
Verifies that the actual value is equal to { @code NaN } .