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<title>GNU libgomp: omp_get_thread_num</title>
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<a name="omp_005fget_005fthread_005fnum-_002d_002d-Current-thread-ID"></a>
<h3 class="section">2.19 <code>omp_get_thread_num</code> &ndash; Current thread ID</h3>
<dl compact="compact">
<dt><em>Description</em>:</dt>
<dd><p>Returns a unique thread identification number within the current team.
In a sequential parts of the program, <code>omp_get_thread_num</code>
always returns 0. In parallel regions the return value varies
from 0 to <code>omp_get_num_threads</code>-1 inclusive. The return
value of the master thread of a team is always 0.
</p>
</dd>
<dt><em>C/C++</em>:</dt>
<dd><table>
<tr><td width="20%"><em>Prototype</em>:</td><td width="80%"><code>int omp_get_thread_num(void);</code></td></tr>
</table>
</dd>
<dt><em>Fortran</em>:</dt>
<dd><table>
<tr><td width="20%"><em>Interface</em>:</td><td width="80%"><code>integer function omp_get_thread_num()</code></td></tr>
</table>
</dd>
<dt><em>See also</em>:</dt>
<dd><p><a href="omp_005fget_005fnum_005fthreads.html#omp_005fget_005fnum_005fthreads">omp_get_num_threads</a>, <a href="omp_005fget_005fancestor_005fthread_005fnum.html#omp_005fget_005fancestor_005fthread_005fnum">omp_get_ancestor_thread_num</a>
</p>
</dd>
<dt><em>Reference</em>:</dt>
<dd><p><a href="http://www.openmp.org/">OpenMP specification v4.0</a>, Section 3.2.4.
</p></dd>
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