<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>GNU Radio 3.2.2 C++ API: gr_fir_fff_simd Class Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.6.2 --> <div class="contents"> <h1>gr_fir_fff_simd Class Reference</h1><!-- doxytag: class="gr_fir_fff_simd" --><!-- doxytag: inherits="gr_fir_fff_generic" --> <p>common base class for SIMD versions of <a class="el" href="classgr__fir__fff.html" title="Abstract class for FIR with float input, float output and float tapsThis is the abstract...">gr_fir_fff</a>This base class handles alignment issues common to SSE and 3DNOW subclasses. <a href="#_details">More...</a></p> <p><code>#include <<a class="el" href="gr__fir__fff__simd_8h_source.html">gr_fir_fff_simd.h</a>></code></p> <div class="dynheader"> Inheritance diagram for gr_fir_fff_simd:</div> <div class="dynsection"> <div class="center"><img src="classgr__fir__fff__simd__inherit__graph.png" border="0" usemap="#gr__fir__fff__simd_inherit__map" alt="Inheritance graph"/></div> <map name="gr__fir__fff__simd_inherit__map" id="gr__fir__fff__simd_inherit__map"> <area shape="rect" id="node7" href="classgr__fir__fff__3dnow.html" title="3DNow! version of gr_fir_fff" alt="" coords="5,237,120,267"/><area shape="rect" id="node9" href="classgr__fir__fff__sse.html" title="SSE version of gr_fir_fff." alt="" coords="144,237,243,267"/><area shape="rect" id="node2" href="classgr__fir__fff__generic.html" title="Concrete class for generic implementation of FIR with float input, float output and..." alt="" coords="69,83,187,112"/><area shape="rect" id="node4" href="classgr__fir__fff.html" title="Abstract class for FIR with float input, float output and float tapsThis is the abstract..." alt="" coords="93,5,163,35"/></map> <center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div> <p><a href="classgr__fir__fff__simd-members.html">List of all members.</a></p> <table border="0" cellpadding="0" cellspacing="0"> <tr><td colspan="2"><h2>Public Member Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__fir__fff__simd.html#a76d646db4230c8fe61b5602c1deddb38">gr_fir_fff_simd</a> ()</td></tr> <tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__fir__fff__simd.html#aa8d3b2ef2763235b8caf18d27e53b4e0">gr_fir_fff_simd</a> (const <a class="el" href="classstd_1_1vector.html">std::vector</a>< float > &<a class="el" href="interpolator__taps_8h.html#a30bf032e13c2a9fc4a98e14e390cd65a">taps</a>)</td></tr> <tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__fir__fff__simd.html#ade1daddb49160bab6ef63c35361a616a">~gr_fir_fff_simd</a> ()</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__fir__fff__simd.html#a222d088b12c98ffbdfa6964da92948ca">set_taps</a> (const <a class="el" href="classstd_1_1vector.html">std::vector</a>< float > &<a class="el" href="interpolator__taps_8h.html#a30bf032e13c2a9fc4a98e14e390cd65a">taps</a>)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">install <code>new_taps</code> as the current taps. <a href="#a222d088b12c98ffbdfa6964da92948ca"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual float </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__fir__fff__simd.html#af7851e658801505687df0f94f85fb34a">filter</a> (const float input[])</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">compute a single output value. <a href="#af7851e658801505687df0f94f85fb34a"></a><br/></td></tr> <tr><td colspan="2"><h2>Protected Types</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">typedef float(* </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__fir__fff__simd.html#ac557d2ce1a74caf9ab7e3213c078cbed">float_dotprod_t</a> )(const float *input, const float *<a class="el" href="interpolator__taps_8h.html#a30bf032e13c2a9fc4a98e14e390cd65a">taps</a>, unsigned n_4_float_blocks)</td></tr> <tr><td colspan="2"><h2>Protected Attributes</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">float * </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__fir__fff__simd.html#a30b7dc4b38f84a5e9619be0ea6742322">d_aligned_taps</a> [4]</td></tr> <tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classgr__fir__fff__simd.html#ac557d2ce1a74caf9ab7e3213c078cbed">float_dotprod_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__fir__fff__simd.html#ae926d2363426209f82c002527be13eb1">d_float_dotprod</a></td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <p>common base class for SIMD versions of <a class="el" href="classgr__fir__fff.html" title="Abstract class for FIR with float input, float output and float tapsThis is the abstract...">gr_fir_fff</a></p> <p>This base class handles alignment issues common to SSE and 3DNOW subclasses. </p> <hr/><h2>Member Typedef Documentation</h2> <a class="anchor" id="ac557d2ce1a74caf9ab7e3213c078cbed"></a><!-- doxytag: member="gr_fir_fff_simd::float_dotprod_t" ref="ac557d2ce1a74caf9ab7e3213c078cbed" args=")(const float *input, const float *taps, unsigned n_4_float_blocks)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">typedef float(* <a class="el" href="classgr__fir__fff__simd.html#ac557d2ce1a74caf9ab7e3213c078cbed">gr_fir_fff_simd::float_dotprod_t</a>)(const float *input, const float *<a class="el" href="interpolator__taps_8h.html#a30bf032e13c2a9fc4a98e14e390cd65a">taps</a>, unsigned n_4_float_blocks)<code> [protected]</code></td> </tr> </table> </div> <div class="memdoc"> </div> </div> <hr/><h2>Constructor & Destructor Documentation</h2> <a class="anchor" id="a76d646db4230c8fe61b5602c1deddb38"></a><!-- doxytag: member="gr_fir_fff_simd::gr_fir_fff_simd" ref="a76d646db4230c8fe61b5602c1deddb38" args="()" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">gr_fir_fff_simd::gr_fir_fff_simd </td> <td>(</td> <td class="paramname"></td> <td> ) </td> <td></td> </tr> </table> </div> <div class="memdoc"> </div> </div> <a class="anchor" id="aa8d3b2ef2763235b8caf18d27e53b4e0"></a><!-- doxytag: member="gr_fir_fff_simd::gr_fir_fff_simd" ref="aa8d3b2ef2763235b8caf18d27e53b4e0" args="(const std::vector< float > &taps)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">gr_fir_fff_simd::gr_fir_fff_simd </td> <td>(</td> <td class="paramtype">const <a class="el" href="classstd_1_1vector.html">std::vector</a>< float > & </td> <td class="paramname"> <em>taps</em></td> <td> ) </td> <td></td> </tr> </table> </div> <div class="memdoc"> </div> </div> <a class="anchor" id="ade1daddb49160bab6ef63c35361a616a"></a><!-- doxytag: member="gr_fir_fff_simd::~gr_fir_fff_simd" ref="ade1daddb49160bab6ef63c35361a616a" args="()" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">gr_fir_fff_simd::~gr_fir_fff_simd </td> <td>(</td> <td class="paramname"></td> <td> ) </td> <td></td> </tr> </table> </div> <div class="memdoc"> </div> </div> <hr/><h2>Member Function Documentation</h2> <a class="anchor" id="af7851e658801505687df0f94f85fb34a"></a><!-- doxytag: member="gr_fir_fff_simd::filter" ref="af7851e658801505687df0f94f85fb34a" args="(const float input[])" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">virtual float gr_fir_fff_simd::filter </td> <td>(</td> <td class="paramtype">const float </td> <td class="paramname"> <em>input</em>[]</td> <td> ) </td> <td><code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>compute a single output value. </p> <p><code>input</code> must have <a class="el" href="classgr__fir__fff.html#ac199a4f381799624a28559c9d8f76826">ntaps()</a> valid entries. input[0] .. input[<a class="el" href="classgr__fir__fff.html#ac199a4f381799624a28559c9d8f76826">ntaps()</a> - 1] are referenced to compute the output value.</p> <dl class="return"><dt><b>Returns:</b></dt><dd>the filtered input value. </dd></dl> <p>Reimplemented from <a class="el" href="classgr__fir__fff__generic.html#a9c78953f14ec2db18421d53309ab2541">gr_fir_fff_generic</a>.</p> </div> </div> <a class="anchor" id="a222d088b12c98ffbdfa6964da92948ca"></a><!-- doxytag: member="gr_fir_fff_simd::set_taps" ref="a222d088b12c98ffbdfa6964da92948ca" args="(const std::vector< float > &taps)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">virtual void gr_fir_fff_simd::set_taps </td> <td>(</td> <td class="paramtype">const <a class="el" href="classstd_1_1vector.html">std::vector</a>< float > & </td> <td class="paramname"> <em>taps</em></td> <td> ) </td> <td><code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>install <code>new_taps</code> as the current taps. </p> <p>Reimplemented from <a class="el" href="classgr__fir__fff.html#ad692c67d571c9fdd45a214bac28c38d6">gr_fir_fff</a>.</p> </div> </div> <hr/><h2>Member Data Documentation</h2> <a class="anchor" id="a30b7dc4b38f84a5e9619be0ea6742322"></a><!-- doxytag: member="gr_fir_fff_simd::d_aligned_taps" ref="a30b7dc4b38f84a5e9619be0ea6742322" args="[4]" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">float* <a class="el" href="classgr__fir__fff__simd.html#a30b7dc4b38f84a5e9619be0ea6742322">gr_fir_fff_simd::d_aligned_taps</a>[4]<code> [protected]</code></td> </tr> </table> </div> <div class="memdoc"> <p><code>aligned_taps</code> holds 4 copies of the coefficients preshifted by 0, 1, 2, or 3 floats to meet all possible input data alignments. This allows us to always fetch data and taps that are 128-bit aligned. </p> </div> </div> <a class="anchor" id="ae926d2363426209f82c002527be13eb1"></a><!-- doxytag: member="gr_fir_fff_simd::d_float_dotprod" ref="ae926d2363426209f82c002527be13eb1" args="" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="classgr__fir__fff__simd.html#ac557d2ce1a74caf9ab7e3213c078cbed">float_dotprod_t</a> <a class="el" href="classgr__fir__fff__simd.html#ae926d2363426209f82c002527be13eb1">gr_fir_fff_simd::d_float_dotprod</a><code> [protected]</code></td> </tr> </table> </div> <div class="memdoc"> </div> </div> <hr/>The documentation for this class was generated from the following file:<ul> <li><a class="el" href="gr__fir__fff__simd_8h_source.html">gr_fir_fff_simd.h</a></li> </ul> </div> <hr size="1"/><address style="text-align: right;"><small>Generated by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address> </body> </html>