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

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<p>
Next: <a href="MODULO.html#MODULO" accesskey="n" rel="next">MODULO</a>, Previous: <a href="MINVAL.html#MINVAL" accesskey="p" rel="prev">MINVAL</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="MOD-_002d_002d_002d-Remainder-function"></a>
<h3 class="section">9.199 <code>MOD</code> &mdash; Remainder function</h3>
<a name="index-MOD"></a>
<a name="index-AMOD"></a>
<a name="index-DMOD"></a>
<a name="index-BMOD"></a>
<a name="index-IMOD"></a>
<a name="index-JMOD"></a>
<a name="index-KMOD"></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, has overloads that are GNU extensions
</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>
<tr><td width="20%"><code>BMOD(A,P)</code></td><td width="20%"><code>INTEGER(1) A,P</code></td><td width="20%"><code>INTEGER(1)</code></td><td width="25%">GNU extension</td></tr>
<tr><td width="20%"><code>IMOD(A,P)</code></td><td width="20%"><code>INTEGER(2) A,P</code></td><td width="20%"><code>INTEGER(2)</code></td><td width="25%">GNU extension</td></tr>
<tr><td width="20%"><code>JMOD(A,P)</code></td><td width="20%"><code>INTEGER(4) A,P</code></td><td width="20%"><code>INTEGER(4)</code></td><td width="25%">GNU extension</td></tr>
<tr><td width="20%"><code>KMOD(A,P)</code></td><td width="20%"><code>INTEGER(8) A,P</code></td><td width="20%"><code>INTEGER(8)</code></td><td width="25%">GNU extension</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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