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| <title>The GNU Fortran Compiler: MOD</title> |
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| <a name="MOD-_002d_002d_002d-Remainder-function"></a> |
| <h3 class="section">8.177 <code>MOD</code> — Remainder function</h3> |
| <a name="index-MOD"></a> |
| <a name="index-AMOD"></a> |
| <a name="index-DMOD"></a> |
| <a name="index-remainder"></a> |
| <a name="index-division_002c-remainder"></a> |
| |
| <dl compact="compact"> |
| <dt><em>Description</em>:</dt> |
| <dd><p><code>MOD(A,P)</code> computes the remainder of the division of A by P. |
| </p> |
| </dd> |
| <dt><em>Standard</em>:</dt> |
| <dd><p>Fortran 77 and later |
| </p> |
| </dd> |
| <dt><em>Class</em>:</dt> |
| <dd><p>Elemental function |
| </p> |
| </dd> |
| <dt><em>Syntax</em>:</dt> |
| <dd><p><code>RESULT = MOD(A, P)</code> |
| </p> |
| </dd> |
| <dt><em>Arguments</em>:</dt> |
| <dd><table> |
| <tr><td width="15%"><var>A</var></td><td width="70%">Shall be a scalar of type <code>INTEGER</code> or <code>REAL</code>.</td></tr> |
| <tr><td width="15%"><var>P</var></td><td width="70%">Shall be a scalar of the same type and kind as <var>A</var> |
| and not equal to zero.</td></tr> |
| </table> |
| |
| </dd> |
| <dt><em>Return value</em>:</dt> |
| <dd><p>The return value is the result of <code>A - (INT(A/P) * P)</code>. The type |
| and kind of the return value is the same as that of the arguments. The |
| returned value has the same sign as A and a magnitude less than the |
| magnitude of P. |
| </p> |
| </dd> |
| <dt><em>Example</em>:</dt> |
| <dd><div class="smallexample"> |
| <pre class="smallexample">program test_mod |
| print *, mod(17,3) |
| print *, mod(17.5,5.5) |
| print *, mod(17.5d0,5.5) |
| print *, mod(17.5,5.5d0) |
| |
| print *, mod(-17,3) |
| print *, mod(-17.5,5.5) |
| print *, mod(-17.5d0,5.5) |
| print *, mod(-17.5,5.5d0) |
| |
| print *, mod(17,-3) |
| print *, mod(17.5,-5.5) |
| print *, mod(17.5d0,-5.5) |
| print *, mod(17.5,-5.5d0) |
| end program test_mod |
| </pre></div> |
| |
| </dd> |
| <dt><em>Specific names</em>:</dt> |
| <dd><table> |
| <tr><td width="20%">Name</td><td width="20%">Arguments</td><td width="20%">Return type</td><td width="25%">Standard</td></tr> |
| <tr><td width="20%"><code>MOD(A,P)</code></td><td width="20%"><code>INTEGER A,P</code></td><td width="20%"><code>INTEGER</code></td><td width="25%">Fortran 95 and later</td></tr> |
| <tr><td width="20%"><code>AMOD(A,P)</code></td><td width="20%"><code>REAL(4) A,P</code></td><td width="20%"><code>REAL(4)</code></td><td width="25%">Fortran 95 and later</td></tr> |
| <tr><td width="20%"><code>DMOD(A,P)</code></td><td width="20%"><code>REAL(8) A,P</code></td><td width="20%"><code>REAL(8)</code></td><td width="25%">Fortran 95 and later</td></tr> |
| </table> |
| |
| </dd> |
| <dt><em>See also</em>:</dt> |
| <dd><p><a href="MODULO.html#MODULO">MODULO</a> |
| </p> |
| </dd> |
| </dl> |
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