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toolchain-gcc-arm-embedded

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<a name="iswblank_002c-iswblank_005fl_002d_002d_002dblank-wide-character-test"></a>
<h3 class="section">3.19 <code>iswblank</code>, <code>iswblank_l</code>&mdash;blank wide character test</h3>
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<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;wctype.h&gt;
int iswblank(wint_t <var>c</var>);

#include &lt;wctype.h&gt;
int iswblank_l(wint_t <var>c</var>, locale_t <var>locale</var>);

</pre></div>
<p><strong>Description</strong><br>
<code>iswblank</code> is a function which classifies wide-character values that
are categorized as blank.
</p>
<p><code>iswblank_l</code> is like <code>iswblank</code> but performs the check based on the
locale specified by the locale object locale.  If <var>locale</var> is
LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
</p>
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<p><strong>Returns</strong><br>
<code>iswblank</code>, <code>iswblank_l</code> return non-zero if <var>c</var> is a blank wide character.
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<p><strong>Portability</strong><br>
<code>iswblank</code> is C99.
<code>iswblank_l</code> is POSIX-1.2008.
</p>
<p>No supporting OS subroutines are required.
</p>
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