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22 <TITLE>Generic Image Library: channel_multiply
</TITLE>
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38 <div class=
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39 <h1>channel_multiply
<br>
41 [
<a class=
"el" href=
"g_i_l_0097.html">Algorithms and Utility Functions
</a>]
</small>
42 </h1><hr><a name=
"_details"></a><h2>Detailed Description
</h2>
43 Multiplying unsigned channel values of the same type. Performs scaled multiplication result = a * b / max_value.
45 Example:
<div class=
"fragment"><pre class=
"fragment">bits8 x=
128;
47 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);
48 assert(mul ==
64);
<span class=
"comment">//
64 =
128 *
128 /
255</span>
51 <table border=
"0" cellpadding=
"0" cellspacing=
"0">
53 <tr><td colspan=
"2"><br><h2>Classes
</h2></td></tr>
54 <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>
56 <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>
57 <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>
59 <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>
60 <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>
62 <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>
63 <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>
65 <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>
66 <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>
68 <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>
69 <tr><td colspan=
"2"><br><h2>Functions
</h2></td></tr>
70 <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)" -->
71 template
<typename Channel
> </td></tr>
72 <tr><td class=
"memTemplItemLeft" nowrap
align=
"right" valign=
"top">channel_traits
< Channel
><br>
73 ::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>
75 <tr><td class=
"mdescLeft"> </td><td class=
"mdescRight">A function multiplying two channels. result = a * b / max_value.
<br></td></tr>
78 <hr size=
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2 13:
50:
17 2009 for Generic Image Library by
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