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<title>The GNU Fortran Compiler: CO_BROADCAST</title>

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<a name="CO_005fBROADCAST"></a>
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<p>
Next: <a href="CO_005fMAX.html#CO_005fMAX" accesskey="n" rel="next">CO_MAX</a>, Previous: <a href="CMPLX.html#CMPLX" accesskey="p" rel="prev">CMPLX</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="CO_005fBROADCAST-_002d_002d_002d-Copy-a-value-to-all-images-the-current-set-of-images"></a>
<h3 class="section">9.63 <code>CO_BROADCAST</code> &mdash; Copy a value to all images the current set of images</h3>
<a name="index-CO_005fBROADCAST"></a>
<a name="index-Collectives_002c-value-broadcasting"></a>

<dl compact="compact">
<dt><em>Description</em>:</dt>
<dd><p><code>CO_BROADCAST</code> copies the value of argument <var>A</var> on the image with
image index <code>SOURCE_IMAGE</code> to all images in the current team.  <var>A</var>
becomes defined as if by intrinsic assignment.  If the execution was
successful and <var>STAT</var> is present, it is assigned the value zero.  If the
execution failed, <var>STAT</var> gets assigned a nonzero value and, if present,
<var>ERRMSG</var> gets assigned a value describing the occurred error.
</p>
</dd>
<dt><em>Standard</em>:</dt>
<dd><p>Technical Specification (TS) 18508 or later
</p>
</dd>
<dt><em>Class</em>:</dt>
<dd><p>Collective subroutine
</p>
</dd>
<dt><em>Syntax</em>:</dt>
<dd><p><code>CALL CO_BROADCAST(A, SOURCE_IMAGE [, STAT, ERRMSG])</code>
</p>
</dd>
<dt><em>Arguments</em>:</dt>
<dd><table>
<tr><td width="15%"><var>A</var></td><td width="70%">INTENT(INOUT) argument; shall have the same
dynamic type and type paramters on all images of the current team. If it
is an array, it shall have the same shape on all images.</td></tr>
<tr><td width="15%"><var>SOURCE_IMAGE</var></td><td width="70%">a scalar integer expression.
It shall have the same the same value on all images and refer to an
image of the current team.</td></tr>
<tr><td width="15%"><var>STAT</var></td><td width="70%">(optional) a scalar integer variable</td></tr>
<tr><td width="15%"><var>ERRMSG</var></td><td width="70%">(optional) a scalar character variable</td></tr>
</table>

</dd>
<dt><em>Example</em>:</dt>
<dd><div class="smallexample">
<pre class="smallexample">program test
  integer :: val(3)
  if (this_image() == 1) then
    val = [1, 5, 3]
  end if
  call co_broadcast (val, source_image=1)
  print *, this_image, &quot;:&quot;, val
end program test
</pre></div>

</dd>
<dt><em>See also</em>:</dt>
<dd><p><a href="CO_005fMAX.html#CO_005fMAX">CO_MAX</a>, <a href="CO_005fMIN.html#CO_005fMIN">CO_MIN</a>, <a href="CO_005fSUM.html#CO_005fSUM">CO_SUM</a>, <a href="CO_005fREDUCE.html#CO_005fREDUCE">CO_REDUCE</a>
</p></dd>
</dl>


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