88 lines
5 KiB
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88 lines
5 KiB
HTML
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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<title>Tagging and Untagging Instructions (Guile Reference Manual)</title>
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<div class="subsubsection-level-extent" id="Tagging-and-Untagging-Instructions">
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Next: <a href="Integer-Arithmetic-Instructions.html" accesskey="n" rel="next">Integer Arithmetic Instructions</a>, Previous: <a href="Atomic-Memory-Access-Instructions.html" accesskey="p" rel="prev">Atomic Memory Access Instructions</a>, Up: <a href="Instruction-Set.html" accesskey="u" rel="up">Instruction Set</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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<h4 class="subsubsection" id="Tagging-and-Untagging-Instructions-1"><span>9.3.7.11 Tagging and Untagging Instructions<a class="copiable-link" href="#Tagging-and-Untagging-Instructions-1"> ¶</a></span></h4>
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<dl class="first-deftypefn">
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<dt class="deftypefn" id="index-tag_002dchar"><span class="category-def">Instruction: </span><span><strong class="def-name">tag-char</strong> <code class="def-code-arguments">s12:<var class="var">dst</var> s12:<var class="var">src</var></code><a class="copiable-link" href="#index-tag_002dchar"> ¶</a></span></dt>
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<dd><p>Make a <code class="code">SCM</code> character whose integer value is the <code class="code">u64</code> in
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<var class="var">src</var>, and store it in <var class="var">dst</var>.
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</p></dd></dl>
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<dl class="first-deftypefn">
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<dt class="deftypefn" id="index-untag_002dchar"><span class="category-def">Instruction: </span><span><strong class="def-name">untag-char</strong> <code class="def-code-arguments">s12:<var class="var">dst</var> s12:<var class="var">src</var></code><a class="copiable-link" href="#index-untag_002dchar"> ¶</a></span></dt>
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<dd><p>Extract the integer value from the <code class="code">SCM</code> character <var class="var">src</var>, and
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store the resulting <code class="code">u64</code> in <var class="var">dst</var>.
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</p></dd></dl>
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<dl class="first-deftypefn">
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<dt class="deftypefn" id="index-tag_002dfixnum"><span class="category-def">Instruction: </span><span><strong class="def-name">tag-fixnum</strong> <code class="def-code-arguments">s12:<var class="var">dst</var> s12:<var class="var">src</var></code><a class="copiable-link" href="#index-tag_002dfixnum"> ¶</a></span></dt>
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<dd><p>Make a <code class="code">SCM</code> integer whose value is the <code class="code">s64</code> in <var class="var">src</var>,
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and store it in <var class="var">dst</var>.
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</p></dd></dl>
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<dl class="first-deftypefn">
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<dt class="deftypefn" id="index-untag_002dfixnum"><span class="category-def">Instruction: </span><span><strong class="def-name">untag-fixnum</strong> <code class="def-code-arguments">s12:<var class="var">dst</var> s12:<var class="var">src</var></code><a class="copiable-link" href="#index-untag_002dfixnum"> ¶</a></span></dt>
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<dd><p>Extract the integer value from the <code class="code">SCM</code> integer <var class="var">src</var>, and
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store the resulting <code class="code">s64</code> in <var class="var">dst</var>.
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</p></dd></dl>
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