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- <h2><span class="refentrytitle">Macro BOOST_VMD_ASSERT_IS_NUMBER</span></h2>
- <p>BOOST_VMD_ASSERT_IS_NUMBER — Asserts that the sequence is a number. </p>
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- <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
- <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="header/boost/vmd/assert_is_number_hpp.html" title="Header <boost/vmd/assert_is_number.hpp>">boost/vmd/assert_is_number.hpp</a>>
- </span>BOOST_VMD_ASSERT_IS_NUMBER(sequence)</pre></div>
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- <a name="idm45529681002208"></a><h2>Description</h2>
- <p>The macro checks that the parameter is a number. If it is not a number, it forces a compiler error.</p>
- <p>The macro normally checks for a number only in debug mode. However an end-user can force the macro to check or not check by defining the macro BOOST_VMD_ASSERT_DATA to 1 or 0 respectively.</p>
- <p>sequence = a possible number.</p>
- <p>returns = Normally the macro returns nothing. If the sequence is a number, nothing is
- output.
- For VC++, because there is no sure way of forcing
- a compiler error from within a macro without producing
- output, if the sequence is not a number the
- macro forces a compiler error by outputting invalid C++.
- For all other compilers a compiler error is forced
- without producing output if the sequence is not a
- number.
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