140 lines
5.1 KiB
HTML
140 lines
5.1 KiB
HTML
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>The GNU Fortran Compiler: TAN</title>
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<meta name="description" content="The GNU Fortran Compiler: TAN">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Intrinsic-Procedures.html#Intrinsic-Procedures" rel="up" title="Intrinsic Procedures">
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<link href="TANH.html#TANH" rel="next" title="TANH">
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<link href="SYSTEM_005fCLOCK.html#SYSTEM_005fCLOCK" rel="prev" title="SYSTEM_CLOCK">
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="TAN"></a>
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<div class="header">
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<p>
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Next: <a href="TANH.html#TANH" accesskey="n" rel="next">TANH</a>, Previous: <a href="SYSTEM_005fCLOCK.html#SYSTEM_005fCLOCK" accesskey="p" rel="prev">SYSTEM_CLOCK</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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</div>
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<hr>
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<a name="TAN-_002d_002d_002d-Tangent-function"></a>
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<h3 class="section">9.255 <code>TAN</code> — Tangent function</h3>
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<a name="index-TAN"></a>
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<a name="index-DTAN"></a>
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<a name="index-trigonometric-function_002c-tangent"></a>
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<a name="index-tangent"></a>
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<dl compact="compact">
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<dt><em>Description</em>:</dt>
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<dd><p><code>TAN(X)</code> computes the tangent of <var>X</var>.
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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 77 and later, for a complex argument Fortran 2008 or 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>Elemental 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 = TAN(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 shall be <code>REAL</code> or <code>COMPLEX</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 has same type and kind as <var>X</var>.
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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_tan
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real(8) :: x = 0.165_8
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x = tan(x)
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end program test_tan
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</pre></div>
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</dd>
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<dt><em>Specific names</em>:</dt>
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<dd><table>
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<tr><td width="20%">Name</td><td width="20%">Argument</td><td width="20%">Return type</td><td width="25%">Standard</td></tr>
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<tr><td width="20%"><code>TAN(X)</code></td><td width="20%"><code>REAL(4) X</code></td><td width="20%"><code>REAL(4)</code></td><td width="25%">Fortran 95 and later</td></tr>
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<tr><td width="20%"><code>DTAN(X)</code></td><td width="20%"><code>REAL(8) X</code></td><td width="20%"><code>REAL(8)</code></td><td width="25%">Fortran 95 and later</td></tr>
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</table>
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</dd>
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<dt><em>See also</em>:</dt>
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<dd><p><a href="ATAN.html#ATAN">ATAN</a>
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</p></dd>
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</dl>
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</body>
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</html>
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