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+<title>The GNU Fortran Compiler: DIGITS</title>
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+<a name="DIGITS-_002d_002d_002d-Significant-binary-digits-function"></a>
+<h3 class="section">8.85 <code>DIGITS</code> &mdash; Significant binary digits function</h3>
+<a name="index-DIGITS"></a>
+<a name="index-model-representation_002c-significant-digits"></a>
+
+<dl compact="compact">
+<dt><em>Description</em>:</dt>
+<dd><p><code>DIGITS(X)</code> returns the number of significant binary digits of the internal
+model representation of <var>X</var>.  For example, on a system using a 32-bit
+floating point representation, a default real number would likely return 24.
+</p>
+</dd>
+<dt><em>Standard</em>:</dt>
+<dd><p>Fortran 90 and later
+</p>
+</dd>
+<dt><em>Class</em>:</dt>
+<dd><p>Inquiry function
+</p>
+</dd>
+<dt><em>Syntax</em>:</dt>
+<dd><p><code>RESULT = DIGITS(X)</code>
+</p>
+</dd>
+<dt><em>Arguments</em>:</dt>
+<dd><table>
+<tr><td width="15%"><var>X</var></td><td width="70%">The type may be <code>INTEGER</code> or <code>REAL</code>.</td></tr>
+</table>
+
+</dd>
+<dt><em>Return value</em>:</dt>
+<dd><p>The return value is of type <code>INTEGER</code>.
+</p>
+</dd>
+<dt><em>Example</em>:</dt>
+<dd><div class="smallexample">
+<pre class="smallexample">program test_digits
+    integer :: i = 12345
+    real :: x = 3.143
+    real(8) :: y = 2.33
+    print *, digits(i)
+    print *, digits(x)
+    print *, digits(y)
+end program test_digits
+</pre></div>
+</dd>
+</dl>
+
+
+
+
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