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<!--Weave of 'Floating-Point Values' generated by Inweb-->
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Services</a></li><li><a href="index.html">kinds</a></li><li><a href="index.html#3">Chapter 3: Arithmetic</a></li><li><b>Floating-Point Values</b></li></ul></div>
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<p class="purpose">To cope with promotions from integer to floating-point arithmetic.</p>
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<ul class="toc"><li><a href="3-fv.html#SP7">§7. Flotations</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>In principle, we could recognise integer and real versions of any
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dimensionless kind (if we really wanted, say, to distinguish "integer weight"
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from "real weight"), but at present we allow only one such pair: <span class="extract"><span class="extract-syntax">number</span></span>
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and <span class="extract"><span class="extract-syntax">real number</span></span>.
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="function-syntax">Kinds::FloatingPoint::real_equivalent</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">Kinds::FloatingPoint::real_equivalent</span></span>:<br/><a href="3-fv.html#SP6">§6</a><br/>The Lattice of Kinds - <a href="2-tlok.html#SP7_2">§7.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-knd.html#SP24" class="function-link"><span class="function-syntax">Kinds::eq</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_number</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">K_real_number</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">K</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="function-syntax">Kinds::FloatingPoint::integer_equivalent</span><button class="popup" onclick="togglePopup('usagePopup2')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup2">Usage of <span class="code-font"><span class="function-syntax">Kinds::FloatingPoint::integer_equivalent</span></span>:<br/><a href="3-fv.html#SP6">§6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-knd.html#SP24" class="function-link"><span class="function-syntax">Kinds::eq</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_real_number</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">K_number</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">K</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>There can be numerous other real-valued kinds; it's just that those don't
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have integer equivalents.
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::uses_floating_point</span><button class="popup" onclick="togglePopup('usagePopup3')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup3">Usage of <span class="code-font"><span class="function-syntax">Kinds::FloatingPoint::uses_floating_point</span></span>:<br/><a href="3-fv.html#SP5">§5</a>, <a href="3-fv.html#SP6">§6</a><br/>The Lattice of Kinds - <a href="2-tlok.html#SP7_2">§7.2</a><br/>Using Kinds - <a href="2-uk.html#SP17">§17</a><br/>Dimensions - <a href="3-dmn.html#SP32_3">§32.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">K</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="4-kc2.html#SP16" class="function-link"><span class="function-syntax">Kinds::Constructors::is_arithmetic_and_real</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">-></span><span class="element-syntax">construct</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>Inform's equations system has to handle promotion (from int to real) or
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demotion (from real to int) quite carefully, and needs the following concept:
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">valid_kind</span><span class="plain-syntax">; </span><span class="comment-syntax"> must be non-null</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">promotion</span><span class="plain-syntax">; </span><span class="comment-syntax"> </span><span class="extract"><span class="extract-syntax">0</span></span><span class="comment-syntax"> for no change, </span><span class="extract"><span class="extract-syntax">1</span></span><span class="comment-syntax"> for "a real version", </span><span class="extract"><span class="extract-syntax">-1</span></span><span class="comment-syntax"> for "an int version"</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">generalised_kind</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>The structure generalised_kind is private to this section.</li></ul>
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<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::new_gk</span><span class="plain-syntax">(</span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">K</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"can't generalise the null kind"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">valid_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">K</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">promotion</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::log_gk</span><span class="plain-syntax">(</span><span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"%u"</span><span class="plain-syntax">, </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">valid_kind</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="identifier-syntax">promotion</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><span class="plain-syntax">) { </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"=>real"</span><span class="plain-syntax">); }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="identifier-syntax">promotion</span><span class="plain-syntax"> == -1) { </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"=>int"</span><span class="plain-syntax">); }</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. </b>Access to which:
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="function-syntax">Kinds::FloatingPoint::underlying</span><span class="plain-syntax">(</span><span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">valid_kind</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::is_real</span><button class="popup" onclick="togglePopup('usagePopup4')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup4">Usage of <span class="code-font"><span class="function-syntax">Kinds::FloatingPoint::is_real</span></span>:<br/><a href="3-fv.html#SP6">§6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="identifier-syntax">promotion</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-fv.html#SP2" class="function-link"><span class="function-syntax">Kinds::FloatingPoint::uses_floating_point</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">valid_kind</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>§6. </b>The following performs the operations "change to real" and "change to int":
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::to_integer</span><span class="plain-syntax">(</span><span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-fv.html#SP5" class="function-link"><span class="function-syntax">Kinds::FloatingPoint::is_real</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">gK</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">promotion</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><span class="plain-syntax">) </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">promotion</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax"> = </span><a href="3-fv.html#SP1" class="function-link"><span class="function-syntax">Kinds::FloatingPoint::integer_equivalent</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">valid_kind</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-fv.html#SP2" class="function-link"><span class="function-syntax">Kinds::FloatingPoint::uses_floating_point</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">valid_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">K</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">promotion</span><span class="plain-syntax"> = -1;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-fv.html#SP5" class="function-link"><span class="function-syntax">Kinds::FloatingPoint::is_real</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">gK</span><span class="plain-syntax">))</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"gK inconsistent"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::to_real</span><span class="plain-syntax">(</span><span class="reserved-syntax">generalised_kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-fv.html#SP5" class="function-link"><span class="function-syntax">Kinds::FloatingPoint::is_real</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">gK</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">promotion</span><span class="plain-syntax"> == -1) </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">promotion</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax"> = </span><a href="3-fv.html#SP1" class="function-link"><span class="function-syntax">Kinds::FloatingPoint::real_equivalent</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">valid_kind</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-fv.html#SP2" class="function-link"><span class="function-syntax">Kinds::FloatingPoint::uses_floating_point</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">)) </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">valid_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">K</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">.</span><span class="element-syntax">promotion</span><span class="plain-syntax"> = </span><span class="constant-syntax">1</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-fv.html#SP5" class="function-link"><span class="function-syntax">Kinds::FloatingPoint::is_real</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">gK</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"gK inconsistent"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">gK</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. Flotations. </b>This is where we compile Inter code to perform "flotation" — promotion to real —
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or "deflotation" — demotion, but taking into account scale factors since the
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integer versions may have been scaled.
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="plain-syntax">#</span><span class="identifier-syntax">ifdef</span><span class="plain-syntax"> </span><span class="identifier-syntax">CORE_MODULE</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::begin_flotation_emit</span><span class="plain-syntax">(</span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-uk.html#SP18" class="function-link"><span class="function-syntax">Kinds::Behaviour::scale_factor</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">) != </span><span class="constant-syntax">1</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::call</span><span class="plain-syntax">(</span><span class="identifier-syntax">Hierarchy::find</span><span class="plain-syntax">(</span><span class="identifier-syntax">REAL_NUMBER_TY_DIVIDE_HL</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::down</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::call</span><span class="plain-syntax">(</span><span class="identifier-syntax">Hierarchy::find</span><span class="plain-syntax">(</span><span class="identifier-syntax">NUMBER_TY_TO_REAL_NUMBER_TY_HL</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::down</span><span class="plain-syntax">();</span>
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<span class="plain-syntax">}</span>
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|
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|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::end_flotation_emit</span><span class="plain-syntax">(</span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::up</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-uk.html#SP18" class="function-link"><span class="function-syntax">Kinds::Behaviour::scale_factor</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">) != </span><span class="constant-syntax">1</span><span class="plain-syntax">) {</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::call</span><span class="plain-syntax">(</span><span class="identifier-syntax">Hierarchy::find</span><span class="plain-syntax">(</span><span class="identifier-syntax">NUMBER_TY_TO_REAL_NUMBER_TY_HL</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::down</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::val_number</span><span class="plain-syntax">((</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><a href="2-uk.html#SP18" class="function-link"><span class="function-syntax">Kinds::Behaviour::scale_factor</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::up</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::up</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax">}</span>
|
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::begin_deflotation_emit</span><span class="plain-syntax">(</span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::call</span><span class="plain-syntax">(</span><span class="identifier-syntax">Hierarchy::find</span><span class="plain-syntax">(</span><span class="identifier-syntax">REAL_NUMBER_TY_TO_NUMBER_TY_HL</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::down</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-uk.html#SP18" class="function-link"><span class="function-syntax">Kinds::Behaviour::scale_factor</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">) != </span><span class="constant-syntax">1</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::call</span><span class="plain-syntax">(</span><span class="identifier-syntax">Hierarchy::find</span><span class="plain-syntax">(</span><span class="identifier-syntax">REAL_NUMBER_TY_TIMES_HL</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::down</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> }</span>
|
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<span class="plain-syntax">}</span>
|
|
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Kinds::FloatingPoint::end_deflotation_emit</span><span class="plain-syntax">(</span><span class="reserved-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-uk.html#SP18" class="function-link"><span class="function-syntax">Kinds::Behaviour::scale_factor</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">) != </span><span class="constant-syntax">1</span><span class="plain-syntax">) {</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::call</span><span class="plain-syntax">(</span><span class="identifier-syntax">Hierarchy::find</span><span class="plain-syntax">(</span><span class="identifier-syntax">REAL_NUMBER_TY_TO_NUMBER_TY_HL</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::down</span><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::val_number</span><span class="plain-syntax">((</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><a href="2-uk.html#SP18" class="function-link"><span class="function-syntax">Kinds::Behaviour::scale_factor</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::up</span><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::up</span><span class="plain-syntax">();</span>
|
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<span class="plain-syntax"> }</span>
|
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<span class="plain-syntax"> </span><span class="identifier-syntax">EmitCode::up</span><span class="plain-syntax">();</span>
|
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<span class="plain-syntax">}</span>
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<span class="plain-syntax">#</span><span class="identifier-syntax">endif</span>
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</pre>
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