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| <a href="#libvips-boolean.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#libvips-boolean.description" class="shortcut">Description</a> |
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| <div class="refentry" title="boolean"> |
| <a name="libvips-boolean"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="libvips-boolean.top_of_page"></a>boolean</span></h2> |
| <p>boolean — boolean algebra on images, bitshifts</p> |
| </td> |
| <td valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsect1" title="Stability Level"> |
| <a name="libvips-boolean.stability-level"></a><h2>Stability Level</h2> |
| Stable, unless otherwise indicated |
| </div> |
| <div class="refsynopsisdiv" title="Synopsis"> |
| <a name="libvips-boolean.synopsis"></a><h2>Synopsis</h2> |
| <pre class="synopsis"> |
| #include <vips/vips.h> |
| |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()">im_andimage</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in1</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *in2</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-orimage" title="im_orimage ()">im_orimage</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in1</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *in2</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-eorimage" title="im_eorimage ()">im_eorimage</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in1</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *in2</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-andimage-vec" title="im_andimage_vec ()">im_andimage_vec</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-andimageconst" title="im_andimageconst ()">im_andimageconst</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">double</span> c</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-orimage-vec" title="im_orimage_vec ()">im_orimage_vec</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-orimageconst" title="im_orimageconst ()">im_orimageconst</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">double</span> c</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-eorimage-vec" title="im_eorimage_vec ()">im_eorimage_vec</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-eorimageconst" title="im_eorimageconst ()">im_eorimageconst</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">double</span> c</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-shiftleft-vec" title="im_shiftleft_vec ()">im_shiftleft_vec</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-shiftleft" title="im_shiftleft ()">im_shiftleft</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-shiftright-vec" title="im_shiftright_vec ()">im_shiftright_vec</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>); |
| <span class="returnvalue">int</span> <a class="link" href="libvips-boolean.html#im-shiftright" title="im_shiftright ()">im_shiftright</a> (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>); |
| </pre> |
| </div> |
| <div class="refsect1" title="Description"> |
| <a name="libvips-boolean.description"></a><h2>Description</h2> |
| <p> |
| These operations perform boolean operations, such as bitwise-and, on |
| every pixel in an image or pair of images. |
| They are useful for combining the results of |
| the relational and morphological functions. |
| All will work with |
| images of any type or any mixture of types of any size and of any number |
| of bands. |
| </p> |
| <p> |
| For binary operations, if the number of bands differs, one of the images |
| must have one band. In this case, an n-band image is formed from the |
| one-band image by joining n copies of the one-band image together and then |
| the two n-band images are operated upon. |
| </p> |
| <p> |
| In the same way, for operations that take an array constant, such as |
| <a class="link" href="libvips-boolean.html#im-andimage-vec" title="im_andimage_vec ()"><code class="function">im_andimage_vec()</code></a>, you can mix single-element arrays or single-band images |
| freely. |
| </p> |
| <p> |
| The output type is the same as the input type for integer types. Float and |
| complex types are cast to signed int. |
| </p> |
| <p> |
| For binary operations on pairs of images, the images must match in size. |
| </p> |
| <p> |
| You might think <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a> would be called "im_and", but that causes |
| problems when we try and make a C++ binding and drop the "im_" prefix. |
| </p> |
| </div> |
| <div class="refsect1" title="Details"> |
| <a name="libvips-boolean.details"></a><h2>Details</h2> |
| <div class="refsect2" title="im_andimage ()"> |
| <a name="im-andimage"></a><h3>im_andimage ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_andimage (<em class="parameter"><code><span class="type">IMAGE</span> *in1</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *in2</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in1</code></em> & <em class="parameter"><code>in2</code></em> and writes the result to <em class="parameter"><code>out</code></em>. |
| The images must be the same size. They may have any format. They may differ |
| in their number of bands, see above. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-orimage" title="im_orimage ()"><code class="function">im_orimage()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in1</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 1 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in2</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 2 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_orimage ()"> |
| <a name="im-orimage"></a><h3>im_orimage ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_orimage (<em class="parameter"><code><span class="type">IMAGE</span> *in1</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *in2</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in1</code></em> | <em class="parameter"><code>in2</code></em> and writes the result to <em class="parameter"><code>out</code></em>. |
| The images must be the same size. They may have any format. They may differ |
| in their number of bands, see above. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-eorimage" title="im_eorimage ()"><code class="function">im_eorimage()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in1</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 1 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in2</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 2 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_eorimage ()"> |
| <a name="im-eorimage"></a><h3>im_eorimage ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_eorimage (<em class="parameter"><code><span class="type">IMAGE</span> *in1</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *in2</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in1</code></em> ^ <em class="parameter"><code>in2</code></em> and writes the result to <em class="parameter"><code>out</code></em>. |
| The images must be the same size. They may have any format. They may differ |
| in their number of bands, see above. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-eorimage-vec" title="im_eorimage_vec ()"><code class="function">im_eorimage_vec()</code></a>, <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in1</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 1 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in2</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 2 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_andimage_vec ()"> |
| <a name="im-andimage-vec"></a><h3>im_andimage_vec ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_andimage_vec (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> & <em class="parameter"><code>c</code></em> (bitwise and of image pixels with array |
| <em class="parameter"><code>c</code></em>) and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimage-vec" title="im_orimage_vec ()"><code class="function">im_orimage_vec()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 1 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>n</code></em> :</span></p></td> |
| <td>array length |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td> |
| <td>array of constants |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_andimageconst ()"> |
| <a name="im-andimageconst"></a><h3>im_andimageconst ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_andimageconst (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">double</span> c</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> & <em class="parameter"><code>c</code></em> (bitwise and of image pixels with |
| constant |
| <em class="parameter"><code>c</code></em>) and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimage-vec" title="im_orimage_vec ()"><code class="function">im_orimage_vec()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 1 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td> |
| <td>constant |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_orimage_vec ()"> |
| <a name="im-orimage-vec"></a><h3>im_orimage_vec ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_orimage_vec (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> | <em class="parameter"><code>c</code></em> (bitwise or of image pixels with array |
| <em class="parameter"><code>c</code></em>) and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimageconst" title="im_orimageconst ()"><code class="function">im_orimageconst()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 1 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>n</code></em> :</span></p></td> |
| <td>array length |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td> |
| <td>array of constants |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_orimageconst ()"> |
| <a name="im-orimageconst"></a><h3>im_orimageconst ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_orimageconst (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">double</span> c</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> | <em class="parameter"><code>c</code></em> (bitwise or of image pixels with |
| constant |
| <em class="parameter"><code>c</code></em>) and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimage-vec" title="im_orimage_vec ()"><code class="function">im_orimage_vec()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 1 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td> |
| <td>constant |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_eorimage_vec ()"> |
| <a name="im-eorimage-vec"></a><h3>im_eorimage_vec ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_eorimage_vec (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> ^ <em class="parameter"><code>c</code></em> (bitwise exclusive-or of image pixels |
| with array |
| <em class="parameter"><code>c</code></em>) and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimageconst" title="im_orimageconst ()"><code class="function">im_orimageconst()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 1 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>n</code></em> :</span></p></td> |
| <td>array length |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td> |
| <td>array of constants |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_eorimageconst ()"> |
| <a name="im-eorimageconst"></a><h3>im_eorimageconst ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_eorimageconst (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">double</span> c</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> ^ <em class="parameter"><code>c</code></em> (bitwise exclusive-or of image pixels |
| with |
| constant |
| <em class="parameter"><code>c</code></em>) and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimage-vec" title="im_orimage_vec ()"><code class="function">im_orimage_vec()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> 1 |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td> |
| <td>constant |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_shiftleft_vec ()"> |
| <a name="im-shiftleft-vec"></a><h3>im_shiftleft_vec ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_shiftleft_vec (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> << <em class="parameter"><code>c</code></em> (left-shift by <em class="parameter"><code>c</code></em> bits |
| with array |
| <em class="parameter"><code>c</code></em>) and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimageconst" title="im_orimageconst ()"><code class="function">im_orimageconst()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>n</code></em> :</span></p></td> |
| <td>array length |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td> |
| <td>array of constants |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_shiftleft ()"> |
| <a name="im-shiftleft"></a><h3>im_shiftleft ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_shiftleft (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> << <em class="parameter"><code>n</code></em> (left-shift by <em class="parameter"><code>n</code></em> bits) |
| and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimageconst" title="im_orimageconst ()"><code class="function">im_orimageconst()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>n</code></em> :</span></p></td> |
| <td>constant |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_shiftright_vec ()"> |
| <a name="im-shiftright-vec"></a><h3>im_shiftright_vec ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_shiftright_vec (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>, |
| <em class="parameter"><code><span class="type">double</span> *c</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> << <em class="parameter"><code>c</code></em> (right-shift by <em class="parameter"><code>c</code></em> bits |
| with array |
| <em class="parameter"><code>c</code></em>) and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimageconst" title="im_orimageconst ()"><code class="function">im_orimageconst()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>n</code></em> :</span></p></td> |
| <td>array length |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>c</code></em> :</span></p></td> |
| <td>array of constants |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2" title="im_shiftright ()"> |
| <a name="im-shiftright"></a><h3>im_shiftright ()</h3> |
| <pre class="programlisting"><span class="returnvalue">int</span> im_shiftright (<em class="parameter"><code><span class="type">IMAGE</span> *in</code></em>, |
| <em class="parameter"><code><span class="type">IMAGE</span> *out</code></em>, |
| <em class="parameter"><code><span class="type">int</span> n</code></em>);</pre> |
| <p> |
| This operation calculates <em class="parameter"><code>in</code></em> >> <em class="parameter"><code>n</code></em> (right-shift by <em class="parameter"><code>n</code></em> bits) |
| and writes the result to <em class="parameter"><code>out</code></em>. |
| </p> |
| <p> |
| See also: <a class="link" href="libvips-boolean.html#im-andimage" title="im_andimage ()"><code class="function">im_andimage()</code></a>, <a class="link" href="libvips-boolean.html#im-orimageconst" title="im_orimageconst ()"><code class="function">im_orimageconst()</code></a>. |
| </p> |
| <div class="variablelist"><table border="0"> |
| <col align="left" valign="top"> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>in</code></em> :</span></p></td> |
| <td>input <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>out</code></em> :</span></p></td> |
| <td>output <span class="type">IMAGE</span> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>n</code></em> :</span></p></td> |
| <td>constant |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> |
| <td> 0 on success, -1 on error |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <div class="refsect1" title="See Also"> |
| <a name="libvips-boolean.see-also"></a><h2>See Also</h2> |
| <a class="link" href="libvips-arithmetic.html" title="arithmetic">arithmetic</a> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr> |
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