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<title>The GNU Fortran Compiler: DIGITS</title>
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<a name="DIGITS"></a>
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<p>
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Next: <a href="DIM.html#DIM" accesskey="n" rel="next">DIM</a>, Previous: <a href="DCMPLX.html#DCMPLX" accesskey="p" rel="prev">DCMPLX</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> [<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>
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<a name="DIGITS-_002d_002d_002d-Significant-binary-digits-function"></a>
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<h3 class="section">9.78 <code>DIGITS</code> — Significant binary digits function</h3>
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<a name="index-DIGITS"></a>
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<a name="index-model-representation_002c-significant-digits"></a>
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<dl compact="compact">
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<dt><em>Description</em>:</dt>
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<dd><p><code>DIGITS(X)</code> returns the number of significant binary digits of the internal
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model representation of <var>X</var>. For example, on a system using a 32-bit
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floating point representation, a default real number would likely return 24.
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</p>
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</dd>
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<dt><em>Standard</em>:</dt>
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<dd><p>Fortran 95 and later
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</p>
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</dd>
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<dt><em>Class</em>:</dt>
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<dd><p>Inquiry function
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</p>
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</dd>
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<dt><em>Syntax</em>:</dt>
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<dd><p><code>RESULT = DIGITS(X)</code>
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</p>
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</dd>
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<dt><em>Arguments</em>:</dt>
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<dd><table>
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<tr><td width="15%"><var>X</var></td><td width="70%">The type may be <code>INTEGER</code> or <code>REAL</code>.</td></tr>
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</table>
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</dd>
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<dt><em>Return value</em>:</dt>
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<dd><p>The return value is of type <code>INTEGER</code>.
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</p>
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</dd>
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<dt><em>Example</em>:</dt>
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<dd><div class="smallexample">
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<pre class="smallexample">program test_digits
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integer :: i = 12345
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real :: x = 3.143
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real(8) :: y = 2.33
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print *, digits(i)
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print *, digits(x)
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print *, digits(y)
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end program test_digits
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</pre></div>
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</dd>
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</dl>
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