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<p>This header was originally in the C standard library as <code><b><stdalign.h></b></code>.
</p><p>C compatibility header.
</p>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><span class="t-lines"><span>__alignas_is_defined</span></span></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> C compatibility macro constant, expands to integer constant <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="nu0">1</span></span></span> <br /> <span class="t-mark">(macro constant)</span>
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