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<div id="projectname">Cyclone Scheme
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 <span id="projectnumber">0.4</span>
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<div class="header">
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<div class="summary">
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<a href="#define-members">Macros</a> </div>
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<div class="headertitle">
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<div class="title">Immediate objects<div class="ingroups"><a class="el" href="group__datatypes.html">Data types</a></div></div> </div>
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</div><!--header-->
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<div class="contents">
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<p>Objects that do not require memory allocation.
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<a href="#details">More...</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
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Macros</h2></td></tr>
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<tr class="memitem:ga91fe9537fe0d1c32e03cb1b8ebf5ed88"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_ga91fe9537fe0d1c32e03cb1b8ebf5ed88.html#ga91fe9537fe0d1c32e03cb1b8ebf5ed88">CYC_FIXNUM_MAX</a>   1073741823</td></tr>
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<tr class="separator:ga91fe9537fe0d1c32e03cb1b8ebf5ed88"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga52e61d0dd752e0899cbec91cfc925f8f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_ga52e61d0dd752e0899cbec91cfc925f8f.html#ga52e61d0dd752e0899cbec91cfc925f8f">CYC_FIXNUM_MIN</a>   -1073741824</td></tr>
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<tr class="separator:ga52e61d0dd752e0899cbec91cfc925f8f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga57936aa324ea2422e81e7f3315caf8cc"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_ga57936aa324ea2422e81e7f3315caf8cc.html#ga57936aa324ea2422e81e7f3315caf8cc">is_object_type</a>(x)   (x && !<a class="el" href="group__immediates_gafc6af90619bb95334e37d574a14e4cd5.html#gafc6af90619bb95334e37d574a14e4cd5">is_value_type</a>(x))</td></tr>
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<tr class="separator:ga57936aa324ea2422e81e7f3315caf8cc"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gafc6af90619bb95334e37d574a14e4cd5"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_gafc6af90619bb95334e37d574a14e4cd5.html#gafc6af90619bb95334e37d574a14e4cd5">is_value_type</a>(x)   ((unsigned long)(x) & (unsigned long)3)</td></tr>
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<tr class="separator:gafc6af90619bb95334e37d574a14e4cd5"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaef8292a2af87ee008b7f938203b8c0b4"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_gaef8292a2af87ee008b7f938203b8c0b4.html#gaef8292a2af87ee008b7f938203b8c0b4">obj_char2obj</a>(c)   ((void *)((((unsigned long)c)<<2) | 2))</td></tr>
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<tr class="separator:gaef8292a2af87ee008b7f938203b8c0b4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga22f35d58167c6490d581528a564de8fe"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_ga22f35d58167c6490d581528a564de8fe.html#ga22f35d58167c6490d581528a564de8fe">obj_int2obj</a>(c)   ((void *)((((long)c)<<1) | 1))</td></tr>
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<tr class="separator:ga22f35d58167c6490d581528a564de8fe"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga2ccdc7b4c0eea0bab0fd75ca52ab08a5"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_ga2ccdc7b4c0eea0bab0fd75ca52ab08a5.html#ga2ccdc7b4c0eea0bab0fd75ca52ab08a5">obj_is_char</a>(x)   (((unsigned long)(x) & (unsigned long)3) == 2)</td></tr>
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<tr class="separator:ga2ccdc7b4c0eea0bab0fd75ca52ab08a5"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga12581fdcaf8eca4346df3d519046e253"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_ga12581fdcaf8eca4346df3d519046e253.html#ga12581fdcaf8eca4346df3d519046e253">obj_is_int</a>(x)   ((unsigned long)(x) & (unsigned long)1)</td></tr>
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<tr class="separator:ga12581fdcaf8eca4346df3d519046e253"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga6476992ed7a19d5ea31e0dbded085a66"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_ga6476992ed7a19d5ea31e0dbded085a66.html#ga6476992ed7a19d5ea31e0dbded085a66">obj_obj2char</a>(x)   (char)((long)(x)>>2)</td></tr>
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<tr class="separator:ga6476992ed7a19d5ea31e0dbded085a66"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga9e32dd92edfac772bf586c77be4334fc"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__immediates_ga9e32dd92edfac772bf586c77be4334fc.html#ga9e32dd92edfac772bf586c77be4334fc">obj_obj2int</a>(x)   ((long)(x)>>1)</td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<p>Objects that do not require memory allocation. </p>
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<p>Immediate objects (also known as value types) are stored directly within the bits that would otherwise be a pointer to an object type. Since all of the data is contained in those bits, a value type is never allocated on the heap and never needs to be garbage collected, making them very efficient.</p>
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<p>Depending on the underlying architecture, compiler, etc these types have extra least significant bits that can be used to mark them as values instead of objects (IE, pointer to a tagged object). On many machines, addresses are multiples of four, leaving the two least significant bits free - from lisp in small pieces.</p>
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<p>The possible types are:</p>
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<ul>
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<li>0x00 - pointer (an object type)</li>
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<li>0x01 - integer (also known as fixnum)</li>
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<li>0x10 - char </li>
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