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<h4 class="subsection">D.14.2 <code>mpfr</code> unary operators</h4>

<p>Functions with these names take a single <code>mpfr</code> number as an
argument and return a single <code>mpfr</code> number as a result. 
<a name="index-gamma-functions-794"></a>
<pre class="example">     sqr      sqrt     cbrt     neg      abs      log
     log2     log10    exp      exp2     exp10    cos
     sin      tan      acos     asin     atan     cosh
     sinh     tanh     acosh    asinh    atanh    lngamma
     expm1    eint     gamma    erf      log1p    nextbelow
     ceil     floor    round    trunc    frac     nextabove
     erfc
</pre>
   <p>The semantics of these functions are similar to those of their
counterparts in the native API, with these provisions.

     <ul>
<li>The precision of the result is the precision of the argument. 
<li>There is no second argument for assigning the result. 
<li>The <code>nextabove</code> and <code>nextbelow</code> functions do not modify
their arguments in place, but return a freshly allocated result
like all other functions. 
</ul>

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