<title>The Mathematical Constants</title>
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</p>
</td>
<td>
+ <p>
+ Equivalent to POSIX constant M_SQRT2
+ </p>
</td>
</tr>
<tr>
</p>
</td>
<td>
+ <p>
+ Equivalent to POSIX constant M_LN2
+ </p>
</td>
</tr>
<tr>
</p>
</td>
<td>
+ <p>
+ Equivalent to POSIX constant M_LN10
+ </p>
</td>
</tr>
<tr>
</p>
</td>
<td>
+ <p>
+ Equivalent to POSIX constant M_SQRT1_2
+ </p>
</td>
</tr>
<tr>
</td>
<td>
<p>
- Ubiquitous. Archimedes constant <a href="http://en.wikipedia.org/wiki/Pi" target="_top">π</a>
+ Ubiquitous. Archimedes constant <a href="http://en.wikipedia.org/wiki/Pi" target="_top">π</a>.
+ Equivalent to POSIX constant M_PI
</p>
</td>
</tr>
</p>
</td>
<td>
+ <p>
+ Equivalent to POSIX constant M_PI2
+ </p>
</td>
</tr>
<tr>
<tr>
<td>
<p>
+ quarter_pi
+ </p>
+ </td>
+<td>
+ <p>
+ π/4
+ </p>
+ </td>
+<td>
+ <p>
+ 0.78539816
+ </p>
+ </td>
+<td>
+ <p>
+ Equivalent to POSIX constant M_PI_4
+ </p>
+ </td>
+</tr>
+<tr>
+<td>
+ <p>
sixth_pi
</p>
</td>
<tr>
<td>
<p>
+ one_div_pi
+ </p>
+ </td>
+<td>
+ <p>
+ 1/π
+ </p>
+ </td>
+<td>
+ <p>
+ 0.31830988
+ </p>
+ </td>
+<td>
+ <p>
+ Equivalent to POSIX constant M_1_PI
+ </p>
+ </td>
+</tr>
+<tr>
+<td>
+ <p>
+ two_div_pi
+ </p>
+ </td>
+<td>
+ <p>
+ 2/π
+ </p>
+ </td>
+<td>
+ <p>
+ 0.63661977
+ </p>
+ </td>
+<td>
+ <p>
+ Equivalent to POSIX constant M_2_PI
+ </p>
+ </td>
+</tr>
+<tr>
+<td>
+ <p>
one_div_root_pi
</p>
</td>
<tr>
<td>
<p>
+ two_div_root_pi
+ </p>
+ </td>
+<td>
+ <p>
+ 2/√π
+ </p>
+ </td>
+<td>
+ <p>
+ 1.128379
+ </p>
+ </td>
+<td>
+ <p>
+ Equivalent to POSIX constant M_2_SQRTPI
+ </p>
+ </td>
+</tr>
+<tr>
+<td>
+ <p>
one_div_root_two_pi
</p>
</td>
<td>
<p>
<a href="http://en.wikipedia.org/wiki/E_(mathematical_constant)" target="_top">Euler's
- constant e</a>
+ constant e</a>, equivalent to POSIX constant M_E
</p>
</td>
</tr>
</p>
</td>
<td>
+ <p>
+ Equivalent to POSIX constant M_LOG10E
+ </p>
</td>
</tr>
<tr>
<tr>
<td>
<p>
+ log2_e
+ </p>
+ </td>
+<td>
+ <p>
+ log<sub>2</sub>(e)
+ </p>
+ </td>
+<td>
+ <p>
+ 1.442695
+ </p>
+ </td>
+<td>
+ <p>
+ This is the same as 1/ln(2) and is equivalent to POSIX constant M_LOG2E
+ </p>
+ </td>
+</tr>
+<tr>
+<td>
+ <p>
<span class="bold"><strong>Trigonometric</strong></span>
</p>
</td>