classfix.html

Tixys source code, include G.711, G.726, IMA-ADPCM etc.

</dl>
<dl compact><dt><b>Returns:</b></dt><dd>a*b. <br>
 If a*b&gt;0x7FFF.FFFF or a*b&lt;-0x8000.0000 then the returned result is undefined.</dd></dl>

<p>
Definition at line <a class="el" href="fix_8cpp-source.html#l00127">127</a> of file <a class="el" href="fix_8cpp-source.html">fix.cpp</a>.    </td>
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<a class="anchor" name="e4" doxytag="Fix::Div"></a><p>
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          <td class="md" nowrap valign="top"><a class="el" href="group__fix.html#ga0">fix</a> Fix::Div           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__fix.html#ga0">fix</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>a</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="group__fix.html#ga0">fix</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>b</em></td>
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          <td class="md"></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"><code> [static]</code></td>
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<p>
Divide two fixed-point numbers. Produces saturated result on overflow.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>a</em>&nbsp;</td><td>Dividend </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>b</em>&nbsp;</td><td>Divisor</td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>a/b. <br>
 If a/b&gt;0x7FFF.FFFF then 0x7FFF.FFFF is returned. <br>
 If a/b&lt;-0x8000.0000 then -0x8000.0000 is returned. <br>
 If b==0 and a&gt;=0 0x7FFF.FFFF is returned. <br>
 If b==0 and a&lt;0 -0x8000.0000 is returned. <br>
</dd></dl>

<p>
Definition at line <a class="el" href="fix_8cpp-source.html#l00141">141</a> of file <a class="el" href="fix_8cpp-source.html">fix.cpp</a>.    </td>
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<a class="anchor" name="e5" doxytag="Fix::Sqrt"></a><p>
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          <td class="md" nowrap valign="top">EXPORT <a class="el" href="group__fix.html#ga0">fix</a> Fix::Sqrt           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__fix.html#ga1">ufix</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>a</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [static]</code></td>
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<p>
Calculate the square root of a fixed-point number.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>a</em>&nbsp;</td><td>Unsigned fixed point number.</td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>a^0.5.</dd></dl>

<p>
Definition at line <a class="el" href="fix_8cpp-source.html#l00316">316</a> of file <a class="el" href="fix_8cpp-source.html">fix.cpp</a>.    </td>
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<a class="anchor" name="e6" doxytag="Fix::Log2"></a><p>
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          <td class="md" nowrap valign="top">EXPORT <a class="el" href="group__fix.html#ga0">fix</a> Fix::Log2           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__fix.html#ga1">ufix</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>a</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [static]</code></td>
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<p>
Calculate the logarithm to base 2 of a fixed-point number . Accuracy is +/-8.40e-6 (+/-0.55 lsb).<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>a</em>&nbsp;</td><td>Unsigned fixed point number.</td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>log2(a). <br>
 If a==0 then -0x8000.0000 is returned</dd></dl>

<p>
Definition at line <a class="el" href="fix_8cpp-source.html#l00378">378</a> of file <a class="el" href="fix_8cpp-source.html">fix.cpp</a>.    </td>
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<a class="anchor" name="e7" doxytag="Fix::Exp2"></a><p>
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          <td class="md" nowrap valign="top">EXPORT <a class="el" href="group__fix.html#ga1">ufix</a> Fix::Exp2           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__fix.html#ga0">fix</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>a</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [static]</code></td>
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<p>
Raise 2 to-the-power of a fixed-point number, (2^a). Accuracy is +/-1.14e-5 (+/-0.75 lsb).<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>a</em>&nbsp;</td><td>Fixed point number.</td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>2^a. <br>
 If 2^a&gt;0xFFFF.FFFF then 0xFFFF.FFFF is returned.</dd></dl>

<p>
Definition at line <a class="el" href="fix_8cpp-source.html#l00427">427</a> of file <a class="el" href="fix_8cpp-source.html">fix.cpp</a>.    </td>
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<a class="anchor" name="e8" doxytag="Fix::Sin"></a><p>
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          <td class="md" nowrap valign="top">EXPORT <a class="el" href="group__fix.html#ga0">fix</a> Fix::Sin           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__fix.html#ga2">fixangle</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>angle</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [static]</code></td>
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<p>
Calculate the Sine of an angle. Accuracy is +/-8.55e-6 (+/-0.56 lsb).<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>angle</em>&nbsp;</td><td>The angle.</td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>The Sine of <em>angle</em>.</dd></dl>

<p>
Definition at line <a class="el" href="fix_8cpp-source.html#l00560">560</a> of file <a class="el" href="fix_8cpp-source.html">fix.cpp</a>.    </td>
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<a class="anchor" name="e9" doxytag="Fix::Cos"></a><p>
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          <td class="md" nowrap valign="top">EXPORT <a class="el" href="group__fix.html#ga0">fix</a> Fix::Cos           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="group__fix.html#ga2">fixangle</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>angle</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [static]</code></td>
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<p>
Calculate the Cosine of an angle. Accuracy is +/-8.55e-6 (+/-0.56 lsb).<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>angle</em>&nbsp;</td><td>The angle.</td></tr>
  </table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>The Cosine of <em>angle</em>.</dd></dl>

<p>
Definition at line <a class="el" href="fix_8cpp-source.html#l00554">554</a> of file <a class="el" href="fix_8cpp-source.html">fix.cpp</a>.    </td>
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<a class="anchor" name="e10" doxytag="Fix::Tan"></a><p>