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<h3 class="section">8.200 <code>REAL</code> — Convert to real type</h3>
<p><a name="index-REAL-940"></a><a name="index-REALPART-941"></a><a name="index-FLOAT-942"></a><a name="index-DFLOAT-943"></a><a name="index-SNGL-944"></a><a name="index-conversion_002c-to-real-945"></a><a name="index-complex-numbers_002c-real-part-946"></a>
<dl>
<dt><em>Description</em>:<dd><code>REAL(A [, KIND])</code> converts its argument <var>A</var> to a real type. The
<code>REALPART</code> function is provided for compatibility with <samp><span class="command">g77</span></samp>,
and its use is strongly discouraged.
<br><dt><em>Standard</em>:<dd>Fortran 77 and later
<br><dt><em>Class</em>:<dd>Elemental function
<br><dt><em>Syntax</em>:<dd>
<p><table summary=""><tr align="left"><td valign="top" width="80%"><code>RESULT = REAL(A [, KIND])</code>
<br></td></tr><tr align="left"><td valign="top" width="80%"><code>RESULT = REALPART(Z)</code>
<br></td></tr></table>
<br><dt><em>Arguments</em>:<dd>
<p><table summary=""><tr align="left"><td valign="top" width="15%"><var>A</var> </td><td valign="top" width="70%">Shall be <code>INTEGER</code>, <code>REAL</code>, or
<code>COMPLEX</code>.
<br></td></tr><tr align="left"><td valign="top" width="15%"><var>KIND</var> </td><td valign="top" width="70%">(Optional) An <code>INTEGER</code> initialization
expression indicating the kind parameter of the result.
<br></td></tr></table>
<br><dt><em>Return value</em>:<dd>These functions return a <code>REAL</code> variable or array under
the following rules:
<dl>
<dt>(A)<dd><code>REAL(A)</code> is converted to a default real type if <var>A</var> is an
integer or real variable.
<br><dt>(B)<dd><code>REAL(A)</code> is converted to a real type with the kind type parameter
of <var>A</var> if <var>A</var> is a complex variable.
<br><dt>(C)<dd><code>REAL(A, KIND)</code> is converted to a real type with kind type
parameter <var>KIND</var> if <var>A</var> is a complex, integer, or real
variable.
</dl>
<br><dt><em>Example</em>:<dd>
<pre class="smallexample"> program test_real
complex :: x = (1.0, 2.0)
print *, real(x), real(x,8), realpart(x)
end program test_real
</pre>
<br><dt><em>Specific names</em>:<dd>
<p><table summary=""><tr align="left"><td valign="top" width="20%">Name </td><td valign="top" width="20%">Argument </td><td valign="top" width="20%">Return type </td><td valign="top" width="25%">Standard
<br></td></tr><tr align="left"><td valign="top" width="20%"><code>FLOAT(A)</code> </td><td valign="top" width="20%"><code>INTEGER(4)</code> </td><td valign="top" width="20%"><code>REAL(4)</code> </td><td valign="top" width="25%">Fortran 77 and later
<br></td></tr><tr align="left"><td valign="top" width="20%"><code>DFLOAT(A)</code> </td><td valign="top" width="20%"><code>INTEGER(4)</code> </td><td valign="top" width="20%"><code>REAL(8)</code> </td><td valign="top" width="25%">GNU extension
<br></td></tr><tr align="left"><td valign="top" width="20%"><code>SNGL(A)</code> </td><td valign="top" width="20%"><code>INTEGER(8)</code> </td><td valign="top" width="20%"><code>REAL(4)</code> </td><td valign="top" width="25%">Fortran 77 and later
<br></td></tr></table>
<br><dt><em>See also</em>:<dd><a href="DBLE.html#DBLE">DBLE</a>
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