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<a name="math-library-operators"></a>
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<a name="math-library-operators-1"></a>
<h3 class="subsection">D.11.1 <code>math</code> library operators</h3>

<p>The unary operators take a single real number to a real result. They
<a name="index-trigonometric-functions"></a>
include
</p>
<table><tr><td>&nbsp;</td><td><pre class="example">ceil  floor round trunc
sin   cos   tan   sinh   cosh   tanh
asin  acos  atan  asinh  acosh  atanh
exp   log   sqrt  cbrt   expm1  log1p  fabs
</pre></td></tr></table>

<p>The binary operators take a pair of real numbers <code>(<var>x</var>,<var>y</var>)</code> to
a single real number output. They include
</p>
<table><tr><td>&nbsp;</td><td><pre class="example">pow  hypot  atan2  remainder  bus  vid  add  sub  mul  div
</pre></td></tr></table>

<p>where the last four correspond to the C language operators <code>+</code>,
<code>-</code>, <code>*</code>, and <code>/</code>. The functions named <code>bus</code> and
<code>vid</code> are like the <code>sub</code> and <code>div</code> functions,
respectively, with the order of the operands reversed, as explained in
<a href="complex.html#complex"><code>complex</code></a>.
</p>
<p>The meanings of these operators are documented in the GNU <code>libc</code> reference
manual or other C language references. They follow IEEE standards including
proper handling of <code>nan</code> and infinity.
</p>
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