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| <a name="ALL-_002d_002d_002d-All-values-in-MASK-along-DIM-are-true"></a> |
| <h3 class="section">8.13 <code>ALL</code> — All values in <var>MASK</var> along <var>DIM</var> are true</h3> |
| <a name="index-ALL"></a> |
| <a name="index-array_002c-apply-condition"></a> |
| <a name="index-array_002c-condition-testing"></a> |
| |
| <dl compact="compact"> |
| <dt><em>Description</em>:</dt> |
| <dd><p><code>ALL(MASK [, DIM])</code> determines if all the values are true in <var>MASK</var> |
| in the array along dimension <var>DIM</var>. |
| </p> |
| </dd> |
| <dt><em>Standard</em>:</dt> |
| <dd><p>Fortran 95 and later |
| </p> |
| </dd> |
| <dt><em>Class</em>:</dt> |
| <dd><p>Transformational function |
| </p> |
| </dd> |
| <dt><em>Syntax</em>:</dt> |
| <dd><p><code>RESULT = ALL(MASK [, DIM])</code> |
| </p> |
| </dd> |
| <dt><em>Arguments</em>:</dt> |
| <dd><table> |
| <tr><td width="15%"><var>MASK</var></td><td width="70%">The type of the argument shall be <code>LOGICAL</code> and |
| it shall not be scalar.</td></tr> |
| <tr><td width="15%"><var>DIM</var></td><td width="70%">(Optional) <var>DIM</var> shall be a scalar integer |
| with a value that lies between one and the rank of <var>MASK</var>.</td></tr> |
| </table> |
| |
| </dd> |
| <dt><em>Return value</em>:</dt> |
| <dd><p><code>ALL(MASK)</code> returns a scalar value of type <code>LOGICAL</code> where |
| the kind type parameter is the same as the kind type parameter of |
| <var>MASK</var>. If <var>DIM</var> is present, then <code>ALL(MASK, DIM)</code> returns |
| an array with the rank of <var>MASK</var> minus 1. The shape is determined from |
| the shape of <var>MASK</var> where the <var>DIM</var> dimension is elided. |
| </p> |
| <dl compact="compact"> |
| <dt>(A)</dt> |
| <dd><p><code>ALL(MASK)</code> is true if all elements of <var>MASK</var> are true. |
| It also is true if <var>MASK</var> has zero size; otherwise, it is false. |
| </p></dd> |
| <dt>(B)</dt> |
| <dd><p>If the rank of <var>MASK</var> is one, then <code>ALL(MASK,DIM)</code> is equivalent |
| to <code>ALL(MASK)</code>. If the rank is greater than one, then <code>ALL(MASK,DIM)</code> |
| is determined by applying <code>ALL</code> to the array sections. |
| </p></dd> |
| </dl> |
| |
| </dd> |
| <dt><em>Example</em>:</dt> |
| <dd><div class="smallexample"> |
| <pre class="smallexample">program test_all |
| logical l |
| l = all((/.true., .true., .true./)) |
| print *, l |
| call section |
| contains |
| subroutine section |
| integer a(2,3), b(2,3) |
| a = 1 |
| b = 1 |
| b(2,2) = 2 |
| print *, all(a .eq. b, 1) |
| print *, all(a .eq. b, 2) |
| end subroutine section |
| end program test_all |
| </pre></div> |
| </dd> |
| </dl> |
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