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  51. <div class="title">constants.hpp</div>  </div>
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  53. <div class="contents">
    54. 

  54. <a href="a00017.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 
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  90. <a name="l00037"></a>00037 
    91. 

  91. <a name="l00038"></a>00038 
    92. 

  92. <a name="l00039"></a>00039 <span class="preprocessor">#ifndef GLM_GTX_constants</span>
    93. 

  93. <a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#define GLM_GTX_constants GLM_VERSION</span>
    94. 

  94. <a name="l00041"></a>00041 <span class="preprocessor"></span>
    95. 

  95. <a name="l00042"></a>00042 <span class="comment">// Dependency:</span>
    96. 

  96. <a name="l00043"></a>00043 <span class="preprocessor">#include &quot;../glm.hpp&quot;</span>
    97. 

  97. <a name="l00044"></a>00044 <span class="preprocessor">#include &quot;../gtc/half_float.hpp&quot;</span>
    98. 

  98. <a name="l00045"></a>00045 
    99. 

  99. <a name="l00046"></a>00046 <span class="preprocessor">#if(defined(GLM_MESSAGES) &amp;&amp; !defined(glm_ext))</span>
    100. 

  100. <a name="l00047"></a>00047 <span class="preprocessor"></span><span class="preprocessor">#       pragma message(&quot;GLM: GLM_GTX_constants extension included&quot;)</span>
    101. 

  101. <a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    102. 

  102. <a name="l00049"></a>00049 <span class="preprocessor"></span>
    103. 

  103. <a name="l00050"></a>00050 <span class="keyword">namespace </span>glm
    104. 

  104. <a name="l00051"></a>00051 {
    105. 

  105. <a name="l00054"></a>00054 
    106. 

  106. <a name="l00058"></a>00058         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    107. 

  107. <a name="l00059"></a>00059         T <a class="code" href="a00162.html#ga73bc2500704c8c25dc3cde534134ca20" title="Return the epsilon constant for floating point types.">epsilon</a>();
    108. 

  108. <a name="l00060"></a>00060 
    109. 

  109. <a name="l00063"></a>00063         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    110. 

  110. <a name="l00064"></a>00064         T <a class="code" href="a00162.html#ga9f4649d36b09c63ee2bccf180f6f3985" title="Return 0.">zero</a>();
    111. 

  111. <a name="l00065"></a>00065 
    112. 

  112. <a name="l00068"></a>00068         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    113. 

  113. <a name="l00069"></a>00069         T <a class="code" href="a00162.html#gad8d83a66c551f43b816f146f20dcdb85" title="Return 1.">one</a>();
    114. 

  114. <a name="l00070"></a>00070 
    115. 

  115. <a name="l00073"></a>00073         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    116. 

  116. <a name="l00074"></a>00074         T <a class="code" href="a00162.html#ga91033e239e639b830ce0a4e7d84ff7b6" title="Return the pi constant.">pi</a>();
    117. 

  117. <a name="l00075"></a>00075 
    118. 

  118. <a name="l00078"></a>00078         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    119. 

  119. <a name="l00079"></a>00079         T <a class="code" href="a00162.html#gaa83b7a56d3a4386ab4c8ef6544a0e9aa" title="Return square root of pi.">root_pi</a>();
    120. 

  120. <a name="l00080"></a>00080 
    121. 

  121. <a name="l00083"></a>00083         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    122. 

  122. <a name="l00084"></a>00084         T <a class="code" href="a00162.html#ga7d3f5974acfdfee6bfb3d9dea93a7ba1" title="Return pi / 2.">half_pi</a>();
    123. 

  123. <a name="l00085"></a>00085 
    124. 

  124. <a name="l00088"></a>00088         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    125. 

  125. <a name="l00089"></a>00089         T <a class="code" href="a00162.html#gaa3878a0bb7cf0c77b899560a80847f12" title="Return pi / 4.">quarter_pi</a>();
    126. 

  126. <a name="l00090"></a>00090 
    127. 

  127. <a name="l00093"></a>00093         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    128. 

  128. <a name="l00094"></a>00094         T <a class="code" href="a00162.html#ga5d4fddb4150d38cc05f7a06adbc7be6f" title="Return 1 / pi.">one_over_pi</a>();
    129. 

  129. <a name="l00095"></a>00095 
    130. 

  130. <a name="l00098"></a>00098         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    131. 

  131. <a name="l00099"></a>00099         T <a class="code" href="a00162.html#gaef0c7e4c219ae01db48a20eeb19f47b0" title="Return 2 / pi.">two_over_pi</a>();
    132. 

  132. <a name="l00100"></a>00100 
    133. 

  133. <a name="l00103"></a>00103         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    134. 

  134. <a name="l00104"></a>00104         T <a class="code" href="a00162.html#ga8a412c16d1aa7bbdd0d03e29aff30ebb" title="Return 2 / sqrt(pi).">two_over_root_pi</a>();
    135. 

  135. <a name="l00105"></a>00105 
    136. 

  136. <a name="l00108"></a>00108         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    137. 

  137. <a name="l00109"></a>00109         T <a class="code" href="a00162.html#ga82228b772a59165585e05e37365b2e8b" title="Return 1 / sqrt(2).">one_over_root_two</a>();
    138. 

  138. <a name="l00110"></a>00110 
    139. 

  139. <a name="l00113"></a>00113         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    140. 

  140. <a name="l00114"></a>00114         T <a class="code" href="a00162.html#gab1bc1acc5958f93a0e677756bdcb4a27" title="Return sqrt(pi / 2).">root_half_pi</a>();
    141. 

  141. <a name="l00115"></a>00115 
    142. 

  142. <a name="l00118"></a>00118         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    143. 

  143. <a name="l00119"></a>00119         T <a class="code" href="a00162.html#gae3334603a5994d3585fd786d98097d82" title="Return sqrt(2 * pi).">root_two_pi</a>();
    144. 

  144. <a name="l00120"></a>00120 
    145. 

  145. <a name="l00123"></a>00123         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    146. 

  146. <a name="l00124"></a>00124         T <a class="code" href="a00162.html#gae86af6ec13101467880e06b54e3e0d71" title="Return sqrt(ln(4)).">root_ln_four</a>();
    147. 

  147. <a name="l00125"></a>00125 
    148. 

  148. <a name="l00128"></a>00128         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    149. 

  149. <a name="l00129"></a>00129         T <a class="code" href="a00162.html#gab932c1030b8bef04437a2d066dc9dc6e" title="Return e constant.">e</a>();
    150. 

  150. <a name="l00130"></a>00130 
    151. 

  151. <a name="l00133"></a>00133         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    152. 

  152. <a name="l00134"></a>00134         T <a class="code" href="a00162.html#ga4ff7948d6e7f40eaee43ce6cea887d22" title="Return Euler&#39;s constant.">euler</a>();
    153. 

  153. <a name="l00135"></a>00135 
    154. 

  154. <a name="l00138"></a>00138         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    155. 

  155. <a name="l00139"></a>00139         T <a class="code" href="a00162.html#gaebae6e8300655e1e1147da9c25946785" title="Return sqrt(2).">root_two</a>();
    156. 

  156. <a name="l00140"></a>00140 
    157. 

  157. <a name="l00143"></a>00143         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    158. 

  158. <a name="l00144"></a>00144         T <a class="code" href="a00162.html#gaaa0072128a49eef880068a8078594609" title="Return sqrt(3).">root_three</a>();
    159. 

  159. <a name="l00145"></a>00145 
    160. 

  160. <a name="l00148"></a>00148         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    161. 

  161. <a name="l00149"></a>00149         T <a class="code" href="a00162.html#gaa907e64aeec08a407739aa090f399820" title="Return sqrt(5).">root_five</a>();
    162. 

  162. <a name="l00150"></a>00150 
    163. 

  163. <a name="l00153"></a>00153         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    164. 

  164. <a name="l00154"></a>00154         T <a class="code" href="a00162.html#gadeb5fef19262158f39a39abfe58558ad" title="Return ln(2).">ln_two</a>();
    165. 

  165. <a name="l00155"></a>00155 
    166. 

  166. <a name="l00158"></a>00158         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    167. 

  167. <a name="l00159"></a>00159         T <a class="code" href="a00162.html#ga255e632bb482a96f8fa34482ab7f0c24" title="Return ln(10).">ln_ten</a>();
    168. 

  168. <a name="l00160"></a>00160 
    169. 

  169. <a name="l00163"></a>00163         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    170. 

  170. <a name="l00164"></a>00164         T <a class="code" href="a00162.html#gab794cac99dec97664ba7cb0d160e3ac6" title="Return ln(ln(2)).">ln_ln_two</a>();
    171. 

  171. <a name="l00165"></a>00165 
    172. 

  172. <a name="l00168"></a>00168         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    173. 

  173. <a name="l00169"></a>00169         T <a class="code" href="a00162.html#gab079778327ce3a341f95ceee16f1d03a" title="Return 1 / 3.">third</a>();
    174. 

  174. <a name="l00170"></a>00170 
    175. 

  175. <a name="l00173"></a>00173         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    176. 

  176. <a name="l00174"></a>00174         T <a class="code" href="a00162.html#ga0ab78128af2f43e313e83eb60a00e321" title="Return 2 / 3.">two_thirds</a>();
    177. 

  177. <a name="l00175"></a>00175 
    178. 

  178. <a name="l00178"></a>00178         <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;
    179. 

  179. <a name="l00179"></a>00179         T <a class="code" href="a00162.html#ga2a4f943607fcf389b7b4dd87e99e50b2" title="Return the golden ratio constant.">golden_ratio</a>();
    180. 

  180. <a name="l00180"></a>00180 
    181. 

  181. <a name="l00182"></a>00182 } <span class="comment">//namespace glm</span>
    182. 

  182. <a name="l00183"></a>00183 
    183. 

  183. <a name="l00184"></a>00184 <span class="preprocessor">#include &quot;constants.inl&quot;</span>
    184. 

  184. <a name="l00185"></a>00185 
    185. 

  185. <a name="l00186"></a>00186 <span class="preprocessor">#endif//GLM_GTX_constants</span>
    186. 

  186. </pre></div></div>
    187. 

  187. </div>
    188. 

  188. 

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  193. </a> 1.7.5.1
    194. 

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    195. 

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    198.