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Christophe Riccio 0c2e470baf Updated API doc
2018-09-02 23:34:18 +02:00

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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;</div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="preprocessor">#include &quot;setup.hpp&quot;</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="preprocessor">#include &lt;limits&gt;</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;</div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="keyword">namespace </span><a class="code" href="a00792.html">glm</a>{</div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="keyword">namespace </span>detail</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;{</div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> genFIType, <span class="keywordtype">bool</span> <span class="comment">/*signed*/</span>&gt;</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160; <span class="keyword">struct </span>compute_abs</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160; {};</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> genFIType&gt;</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; <span class="keyword">struct </span>compute_abs&lt;genFIType, true&gt;</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160; {</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160; GLM_FUNC_QUALIFIER GLM_CONSTEXPR <span class="keyword">static</span> genFIType call(genFIType x)</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; GLM_STATIC_ASSERT(</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; std::numeric_limits&lt;genFIType&gt;::is_iec559 || std::numeric_limits&lt;genFIType&gt;::is_signed,</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; <span class="stringliteral">&quot;&#39;abs&#39; only accept floating-point and integer scalar or vector inputs&quot;</span>);</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; <span class="keywordflow">return</span> x &gt;= genFIType(0) ? x : -x;</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; <span class="comment">// TODO, perf comp with: *(((int *) &amp;x) + 1) &amp;= 0x7fffffff;</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; }</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; };</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#if GLM_COMPILER &amp; GLM_COMPILER_CUDA</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="keyword">template</span>&lt;&gt;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <span class="keyword">struct </span>compute_abs&lt;float, true&gt;</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; {</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; GLM_FUNC_QUALIFIER GLM_CONSTEXPR <span class="keyword">static</span> <span class="keywordtype">float</span> call(<span class="keywordtype">float</span> x)</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; {</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="keywordflow">return</span> fabsf(x);</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; }</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; };</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> genFIType&gt;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keyword">struct </span>compute_abs&lt;genFIType, false&gt;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; {</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; GLM_FUNC_QUALIFIER GLM_CONSTEXPR <span class="keyword">static</span> genFIType call(genFIType x)</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; GLM_STATIC_ASSERT(</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; (!std::numeric_limits&lt;genFIType&gt;::is_signed &amp;&amp; std::numeric_limits&lt;genFIType&gt;::is_integer),</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="stringliteral">&quot;&#39;abs&#39; only accept floating-point and integer scalar or vector inputs&quot;</span>);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">return</span> x;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; }</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; };</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;}<span class="comment">//namespace detail</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;}<span class="comment">//namespace glm</span></div><div class="ttc" id="a00792_html"><div class="ttname"><a href="a00792.html">glm</a></div><div class="ttdef"><b>Definition:</b> <a href="a00002_source.html#l00020">common.hpp:20</a></div></div>
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