ode>R</code> <strong><code>log</code></strong><code>(T x)</code><br>
natural logarithm of x</p>
<!-- R; log2; (T x); -->
<p></p>
<p><code>R</code> <strong><code>log2</code></strong><code>(T x)</code><br>
base-2 logarithm of x</p>
<!-- R; log10; (T x); -->
<p></p>
<p><code>R</code> <strong><code>log10</code></strong><code>(T x)</code><br>
base-10 logarithm of x</p>
<!-- real; pow; (real x, real y); -->
<p></p>
<p><code>real</code> <strong><code>pow</code></strong><code>(real x, real y)</code><br>
Return x ra