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| <h3 class="section">8.257 <code>XOR</code> — Bitwise logical exclusive OR</h3> |
| |
| <p><a name="index-XOR-1137"></a><a name="index-bitwise-logical-exclusive-or-1138"></a><a name="index-logical-exclusive-or_002c-bitwise-1139"></a> |
| <dl> |
| <dt><em>Description</em>:<dd>Bitwise logical exclusive or. |
| |
| <p>This intrinsic routine is provided for backwards compatibility with |
| GNU Fortran 77. For integer arguments, programmers should consider |
| the use of the <a href="IEOR.html#IEOR">IEOR</a> intrinsic and for logical arguments the |
| <code>.NEQV.</code> operator, which are both defined by the Fortran standard. |
| |
| <br><dt><em>Standard</em>:<dd>GNU extension |
| |
| <br><dt><em>Class</em>:<dd>Function |
| |
| <br><dt><em>Syntax</em>:<dd><code>RESULT = XOR(I, J)</code> |
| |
| <br><dt><em>Arguments</em>:<dd> |
| <p><table summary=""><tr align="left"><td valign="top" width="15%"><var>I</var> </td><td valign="top" width="70%">The type shall be either a scalar <code>INTEGER</code> |
| type or a scalar <code>LOGICAL</code> type. |
| <br></td></tr><tr align="left"><td valign="top" width="15%"><var>J</var> </td><td valign="top" width="70%">The type shall be the same as the type of <var>I</var>. |
| <br></td></tr></table> |
| |
| <br><dt><em>Return value</em>:<dd>The return type is either a scalar <code>INTEGER</code> or a scalar |
| <code>LOGICAL</code>. If the kind type parameters differ, then the |
| smaller kind type is implicitly converted to larger kind, and the |
| return has the larger kind. |
| |
| <br><dt><em>Example</em>:<dd> |
| <pre class="smallexample"> PROGRAM test_xor |
| LOGICAL :: T = .TRUE., F = .FALSE. |
| INTEGER :: a, b |
| DATA a / Z'F' /, b / Z'3' / |
| |
| WRITE (*,*) XOR(T, T), XOR(T, F), XOR(F, T), XOR(F, F) |
| WRITE (*,*) XOR(a, b) |
| END PROGRAM |
| </pre> |
| <br><dt><em>See also</em>:<dd>Fortran 95 elemental function: <a href="IEOR.html#IEOR">IEOR</a> |
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