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| <TITLE>Generic Image Library: channel_multiply</TITLE> |
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| <h1>channel_multiply<br> |
| <small> |
| [<a class="el" href="g_i_l_0097.html">Algorithms and Utility Functions</a>]</small> |
| </h1><hr><a name="_details"></a><h2>Detailed Description</h2> |
| Multiplying unsigned channel values of the same type. Performs scaled multiplication result = a * b / max_value. |
| <p> |
| Example: <div class="fragment"><pre class="fragment">bits8 x=128; |
| bits8 y=128; |
| bits8 mul = <a class="code" href="g_i_l_0103.html#gf73b2a47a7877767534df0eee46dda17" title="A function multiplying two channels. result = a * b / max_value.">channel_multiply</a>(x,y); |
| assert(mul == 64); <span class="comment">// 64 = 128 * 128 / 255</span> |
| </pre></div> |
| <p> |
| <table border="0" cellpadding="0" cellspacing="0"> |
| <tr><td></td></tr> |
| <tr><td colspan="2"><br><h2>Classes</h2></td></tr> |
| <tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0422.html">channel_multiplier_unsigned</a></td></tr> |
| |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">This is the default implementation. Performance specializatons are provided. <a href="g_i_l_0422.html#_details">More...</a><br></td></tr> |
| <tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0428.html">channel_multiplier_unsigned< bits8 ></a></td></tr> |
| |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">Specialization of channel_multiply for 8-bit unsigned channels. <a href="g_i_l_0428.html#_details">More...</a><br></td></tr> |
| <tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0424.html">channel_multiplier_unsigned< bits16 ></a></td></tr> |
| |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">Specialization of channel_multiply for 16-bit unsigned channels. <a href="g_i_l_0424.html#_details">More...</a><br></td></tr> |
| <tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0426.html">channel_multiplier_unsigned< bits32f ></a></td></tr> |
| |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">Specialization of channel_multiply for float 0..1 channels. <a href="g_i_l_0426.html#_details">More...</a><br></td></tr> |
| <tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0420.html">channel_multiplier</a></td></tr> |
| |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">A function object to multiply two channels. result = a * b / max_value. <a href="g_i_l_0420.html#_details">More...</a><br></td></tr> |
| <tr><td colspan="2"><br><h2>Functions</h2></td></tr> |
| <tr><td class="memTemplParams" nowrap colspan="2"><a class="anchor" name="gf73b2a47a7877767534df0eee46dda17"></a><!-- doxytag: member="ChannelMultiplyAlgorithm::channel_multiply" ref="gf73b2a47a7877767534df0eee46dda17" args="(Channel a, Channel b)" --> |
| template<typename Channel> </td></tr> |
| <tr><td class="memTemplItemLeft" nowrap align="right" valign="top">channel_traits< Channel ><br> |
| ::value_type </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="g_i_l_0103.html#gf73b2a47a7877767534df0eee46dda17">channel_multiply</a> (Channel a, Channel b)</td></tr> |
| |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">A function multiplying two channels. result = a * b / max_value. <br></td></tr> |
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