ype">double</SPAN> v1 = <SPAN class="literal">1.23456e-10</SPAN>;
    <SPAN class="cpp-type">double</SPAN> v2 = <SPAN class="literal">1.23457e-10</SPAN>;

    BOOST_CHECK_CLOSE( v1, v2, <SPAN class="literal">1e-6</SPAN> ); <SPAN class="comment">// should fail at tolerance supplied</SPAN>

    <SPAN class="reserv-word">return</SPAN> <SPAN class="literal">0</SPAN>;
}</PRE>
  <H4>Output:</H4>
  <P class="test-output">test.cpp(4) : error in test_main: test v1 (==) v2 failed [1.23456e-10 != 1.23457e-10 
    (1e-