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| <title>The GNU Fortran Compiler: NUM_IMAGES</title> |
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| <a name="NUM_005fIMAGES"></a> |
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| <a name="NUM_005fIMAGES-_002d_002d_002d-Function-that-returns-the-number-of-images"></a> |
| <h3 class="section">9.201 <code>NUM_IMAGES</code> — Function that returns the number of images</h3> |
| <a name="index-NUM_005fIMAGES"></a> |
| <a name="index-coarray_002c-NUM_005fIMAGES"></a> |
| <a name="index-images_002c-number-of"></a> |
| |
| <dl compact="compact"> |
| <dt><em>Description</em>:</dt> |
| <dd><p>Returns the number of images. |
| </p> |
| </dd> |
| <dt><em>Standard</em>:</dt> |
| <dd><p>Fortran 2008 and later. With <var>DISTANCE</var> or <var>FAILED</var> argument, |
| Technical Specification (TS) 18508 or later |
| </p> |
| |
| </dd> |
| <dt><em>Class</em>:</dt> |
| <dd><p>Transformational function |
| </p> |
| </dd> |
| <dt><em>Syntax</em>:</dt> |
| <dd><p><code>RESULT = NUM_IMAGES(DISTANCE, FAILED)</code> |
| </p> |
| </dd> |
| <dt><em>Arguments</em>:</dt> |
| <dd><table> |
| <tr><td width="15%"><var>DISTANCE</var></td><td width="70%">(optional, intent(in)) Nonnegative scalar integer</td></tr> |
| <tr><td width="15%"><var>FAILED</var></td><td width="70%">(optional, intent(in)) Scalar logical expression</td></tr> |
| </table> |
| |
| </dd> |
| <dt><em>Return value</em>:</dt> |
| <dd><p>Scalar default-kind integer. If <var>DISTANCE</var> is not present or has value 0, |
| the number of images in the current team is returned. For values smaller or |
| equal distance to the initial team, it returns the number of images index |
| on the ancestor team which has a distance of <var>DISTANCE</var> from the invoking |
| team. If <var>DISTANCE</var> is larger than the distance to the initial team, the |
| number of images of the initial team is returned. If <var>FAILED</var> is not present |
| the total number of images is returned; if it has the value <code>.TRUE.</code>, |
| the number of failed images is returned, otherwise, the number of images which |
| do have not the failed status. |
| </p> |
| </dd> |
| <dt><em>Example</em>:</dt> |
| <dd><div class="smallexample"> |
| <pre class="smallexample">INTEGER :: value[*] |
| INTEGER :: i |
| value = THIS_IMAGE() |
| SYNC ALL |
| IF (THIS_IMAGE() == 1) THEN |
| DO i = 1, NUM_IMAGES() |
| WRITE(*,'(2(a,i0))') 'value[', i, '] is ', value[i] |
| END DO |
| END IF |
| </pre></div> |
| |
| </dd> |
| <dt><em>See also</em>:</dt> |
| <dd><p><a href="THIS_005fIMAGE.html#THIS_005fIMAGE">THIS_IMAGE</a>, <a href="IMAGE_005fINDEX.html#IMAGE_005fINDEX">IMAGE_INDEX</a> |
| </p></dd> |
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