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<div class="header">
  <div class="summary">
<a href="#func-members">Functions</a>  </div>
  <div class="headertitle">
<div class="title">GLM_GTC_constants<div class="ingroups"><a class="el" href="a00153.html">GTC Extensions (Stable)</a></div></div>  </div>
</div><!--header-->
<div class="contents">

<p>Provide a list of constants and precomputed useful values.  
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga4b7956eb6e2fbedfc7cf2e46e85c5139"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga4b7956eb6e2fbedfc7cf2e46e85c5139"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga4b7956eb6e2fbedfc7cf2e46e85c5139">e</a> ()</td></tr>
<tr class="memdesc:ga4b7956eb6e2fbedfc7cf2e46e85c5139"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return e constant.  <a href="a00162.html#ga4b7956eb6e2fbedfc7cf2e46e85c5139">More...</a><br /></td></tr>
<tr class="separator:ga4b7956eb6e2fbedfc7cf2e46e85c5139"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga2a1e57fc5592b69cfae84174cbfc9429"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga2a1e57fc5592b69cfae84174cbfc9429"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga2a1e57fc5592b69cfae84174cbfc9429">epsilon</a> ()</td></tr>
<tr class="memdesc:ga2a1e57fc5592b69cfae84174cbfc9429"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the epsilon constant for floating point types.  <a href="a00162.html#ga2a1e57fc5592b69cfae84174cbfc9429">More...</a><br /></td></tr>
<tr class="separator:ga2a1e57fc5592b69cfae84174cbfc9429"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gad8fe2e6f90bce9d829e9723b649fbd42"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gad8fe2e6f90bce9d829e9723b649fbd42"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#gad8fe2e6f90bce9d829e9723b649fbd42">euler</a> ()</td></tr>
<tr class="memdesc:gad8fe2e6f90bce9d829e9723b649fbd42"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return Euler's constant.  <a href="a00162.html#gad8fe2e6f90bce9d829e9723b649fbd42">More...</a><br /></td></tr>
<tr class="separator:gad8fe2e6f90bce9d829e9723b649fbd42"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga753950e5140e4ea6a88e4a18ba61dc09"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga753950e5140e4ea6a88e4a18ba61dc09"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga753950e5140e4ea6a88e4a18ba61dc09">four_over_pi</a> ()</td></tr>
<tr class="memdesc:ga753950e5140e4ea6a88e4a18ba61dc09"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 4 / pi.  <a href="a00162.html#ga753950e5140e4ea6a88e4a18ba61dc09">More...</a><br /></td></tr>
<tr class="separator:ga753950e5140e4ea6a88e4a18ba61dc09"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga748cf8642830657c5b7eae04d0a80899"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga748cf8642830657c5b7eae04d0a80899"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga748cf8642830657c5b7eae04d0a80899">golden_ratio</a> ()</td></tr>
<tr class="memdesc:ga748cf8642830657c5b7eae04d0a80899"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the golden ratio constant.  <a href="a00162.html#ga748cf8642830657c5b7eae04d0a80899">More...</a><br /></td></tr>
<tr class="separator:ga748cf8642830657c5b7eae04d0a80899"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga0c36b41d462e45641faf7d7938948bac"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga0c36b41d462e45641faf7d7938948bac"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga0c36b41d462e45641faf7d7938948bac">half_pi</a> ()</td></tr>
<tr class="memdesc:ga0c36b41d462e45641faf7d7938948bac"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return pi / 2.  <a href="a00162.html#ga0c36b41d462e45641faf7d7938948bac">More...</a><br /></td></tr>
<tr class="separator:ga0c36b41d462e45641faf7d7938948bac"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaca94292c839ed31a405ab7a81ae7e850"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gaca94292c839ed31a405ab7a81ae7e850"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#gaca94292c839ed31a405ab7a81ae7e850">ln_ln_two</a> ()</td></tr>
<tr class="memdesc:gaca94292c839ed31a405ab7a81ae7e850"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return ln(ln(2)).  <a href="a00162.html#gaca94292c839ed31a405ab7a81ae7e850">More...</a><br /></td></tr>
<tr class="separator:gaca94292c839ed31a405ab7a81ae7e850"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaf97ebc6c059ffd788e6c4946f71ef66c"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gaf97ebc6c059ffd788e6c4946f71ef66c"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#gaf97ebc6c059ffd788e6c4946f71ef66c">ln_ten</a> ()</td></tr>
<tr class="memdesc:gaf97ebc6c059ffd788e6c4946f71ef66c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return ln(10).  <a href="a00162.html#gaf97ebc6c059ffd788e6c4946f71ef66c">More...</a><br /></td></tr>
<tr class="separator:gaf97ebc6c059ffd788e6c4946f71ef66c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga24f4d27765678116f41a2f336ab7975c"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga24f4d27765678116f41a2f336ab7975c"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga24f4d27765678116f41a2f336ab7975c">ln_two</a> ()</td></tr>
<tr class="memdesc:ga24f4d27765678116f41a2f336ab7975c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return ln(2).  <a href="a00162.html#ga24f4d27765678116f41a2f336ab7975c">More...</a><br /></td></tr>
<tr class="separator:ga24f4d27765678116f41a2f336ab7975c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga39c2fb227631ca25894326529bdd1ee5"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga39c2fb227631ca25894326529bdd1ee5"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga39c2fb227631ca25894326529bdd1ee5">one</a> ()</td></tr>
<tr class="memdesc:ga39c2fb227631ca25894326529bdd1ee5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 1.  <a href="a00162.html#ga39c2fb227631ca25894326529bdd1ee5">More...</a><br /></td></tr>
<tr class="separator:ga39c2fb227631ca25894326529bdd1ee5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga555150da2b06d23c8738981d5013e0eb"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga555150da2b06d23c8738981d5013e0eb"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga555150da2b06d23c8738981d5013e0eb">one_over_pi</a> ()</td></tr>
<tr class="memdesc:ga555150da2b06d23c8738981d5013e0eb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 1 / pi.  <a href="a00162.html#ga555150da2b06d23c8738981d5013e0eb">More...</a><br /></td></tr>
<tr class="separator:ga555150da2b06d23c8738981d5013e0eb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga788fa23a0939bac4d1d0205fb4f35818"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga788fa23a0939bac4d1d0205fb4f35818"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga788fa23a0939bac4d1d0205fb4f35818">one_over_root_two</a> ()</td></tr>
<tr class="memdesc:ga788fa23a0939bac4d1d0205fb4f35818"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 1 / sqrt(2).  <a href="a00162.html#ga788fa23a0939bac4d1d0205fb4f35818">More...</a><br /></td></tr>
<tr class="separator:ga788fa23a0939bac4d1d0205fb4f35818"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga7c922b427986cbb2e4c6ac69874eefbc"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga7c922b427986cbb2e4c6ac69874eefbc"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga7c922b427986cbb2e4c6ac69874eefbc">one_over_two_pi</a> ()</td></tr>
<tr class="memdesc:ga7c922b427986cbb2e4c6ac69874eefbc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 1 / (pi * 2).  <a href="a00162.html#ga7c922b427986cbb2e4c6ac69874eefbc">More...</a><br /></td></tr>
<tr class="separator:ga7c922b427986cbb2e4c6ac69874eefbc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga94bafeb2a0f23ab6450fed1f98ee4e45"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga94bafeb2a0f23ab6450fed1f98ee4e45"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga94bafeb2a0f23ab6450fed1f98ee4e45">pi</a> ()</td></tr>
<tr class="memdesc:ga94bafeb2a0f23ab6450fed1f98ee4e45"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the pi constant.  <a href="a00162.html#ga94bafeb2a0f23ab6450fed1f98ee4e45">More...</a><br /></td></tr>
<tr class="separator:ga94bafeb2a0f23ab6450fed1f98ee4e45"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga3c9df42bd73c519a995c43f0f99e77e0"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga3c9df42bd73c519a995c43f0f99e77e0"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga3c9df42bd73c519a995c43f0f99e77e0">quarter_pi</a> ()</td></tr>
<tr class="memdesc:ga3c9df42bd73c519a995c43f0f99e77e0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return pi / 4.  <a href="a00162.html#ga3c9df42bd73c519a995c43f0f99e77e0">More...</a><br /></td></tr>
<tr class="separator:ga3c9df42bd73c519a995c43f0f99e77e0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gae9ebbded75b53d4faeb1e4ef8b3347a2"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gae9ebbded75b53d4faeb1e4ef8b3347a2"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#gae9ebbded75b53d4faeb1e4ef8b3347a2">root_five</a> ()</td></tr>
<tr class="memdesc:gae9ebbded75b53d4faeb1e4ef8b3347a2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return sqrt(5).  <a href="a00162.html#gae9ebbded75b53d4faeb1e4ef8b3347a2">More...</a><br /></td></tr>
<tr class="separator:gae9ebbded75b53d4faeb1e4ef8b3347a2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga4e276cb823cc5e612d4f89ed99c75039"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga4e276cb823cc5e612d4f89ed99c75039"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga4e276cb823cc5e612d4f89ed99c75039">root_half_pi</a> ()</td></tr>
<tr class="memdesc:ga4e276cb823cc5e612d4f89ed99c75039"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return sqrt(pi / 2).  <a href="a00162.html#ga4e276cb823cc5e612d4f89ed99c75039">More...</a><br /></td></tr>
<tr class="separator:ga4e276cb823cc5e612d4f89ed99c75039"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga4129412e96b33707a77c1a07652e23e2"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga4129412e96b33707a77c1a07652e23e2"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga4129412e96b33707a77c1a07652e23e2">root_ln_four</a> ()</td></tr>
<tr class="memdesc:ga4129412e96b33707a77c1a07652e23e2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return sqrt(ln(4)).  <a href="a00162.html#ga4129412e96b33707a77c1a07652e23e2">More...</a><br /></td></tr>
<tr class="separator:ga4129412e96b33707a77c1a07652e23e2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga261380796b2cd496f68d2cf1d08b8eb9"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga261380796b2cd496f68d2cf1d08b8eb9"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga261380796b2cd496f68d2cf1d08b8eb9">root_pi</a> ()</td></tr>
<tr class="memdesc:ga261380796b2cd496f68d2cf1d08b8eb9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return square root of pi.  <a href="a00162.html#ga261380796b2cd496f68d2cf1d08b8eb9">More...</a><br /></td></tr>
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<tr class="memdesc:ga4f286be4abe88be1eed7d2a9f6cb193e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return sqrt(3).  <a href="a00162.html#ga4f286be4abe88be1eed7d2a9f6cb193e">More...</a><br /></td></tr>
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<tr class="memdesc:ga74e607d29020f100c0d0dc46ce2ca950"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return sqrt(2).  <a href="a00162.html#ga74e607d29020f100c0d0dc46ce2ca950">More...</a><br /></td></tr>
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<tr class="memitem:ga2bcedc575039fe0cd765742f8bbb0bd3"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga2bcedc575039fe0cd765742f8bbb0bd3">root_two_pi</a> ()</td></tr>
<tr class="memdesc:ga2bcedc575039fe0cd765742f8bbb0bd3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return sqrt(2 * pi).  <a href="a00162.html#ga2bcedc575039fe0cd765742f8bbb0bd3">More...</a><br /></td></tr>
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<tr class="memitem:ga3077c6311010a214b69ddc8214ec13b5"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga3077c6311010a214b69ddc8214ec13b5">third</a> ()</td></tr>
<tr class="memdesc:ga3077c6311010a214b69ddc8214ec13b5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 1 / 3.  <a href="a00162.html#ga3077c6311010a214b69ddc8214ec13b5">More...</a><br /></td></tr>
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<tr class="memitem:gae94950df74b0ce382b1fc1d978ef7394"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gae94950df74b0ce382b1fc1d978ef7394"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#gae94950df74b0ce382b1fc1d978ef7394">three_over_two_pi</a> ()</td></tr>
<tr class="memdesc:gae94950df74b0ce382b1fc1d978ef7394"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return pi / 2 * 3.  <a href="a00162.html#gae94950df74b0ce382b1fc1d978ef7394">More...</a><br /></td></tr>
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<tr class="memitem:ga74eadc8a211253079683219a3ea0462a"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga74eadc8a211253079683219a3ea0462a"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga74eadc8a211253079683219a3ea0462a">two_over_pi</a> ()</td></tr>
<tr class="memdesc:ga74eadc8a211253079683219a3ea0462a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 2 / pi.  <a href="a00162.html#ga74eadc8a211253079683219a3ea0462a">More...</a><br /></td></tr>
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<tr class="memitem:ga5827301817640843cf02026a8d493894"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga5827301817640843cf02026a8d493894"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga5827301817640843cf02026a8d493894">two_over_root_pi</a> ()</td></tr>
<tr class="memdesc:ga5827301817640843cf02026a8d493894"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 2 / sqrt(pi).  <a href="a00162.html#ga5827301817640843cf02026a8d493894">More...</a><br /></td></tr>
<tr class="separator:ga5827301817640843cf02026a8d493894"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaa5276a4617566abcfe49286f40e3a256"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:gaa5276a4617566abcfe49286f40e3a256"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#gaa5276a4617566abcfe49286f40e3a256">two_pi</a> ()</td></tr>
<tr class="memdesc:gaa5276a4617566abcfe49286f40e3a256"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return pi * 2.  <a href="a00162.html#gaa5276a4617566abcfe49286f40e3a256">More...</a><br /></td></tr>
<tr class="separator:gaa5276a4617566abcfe49286f40e3a256"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga9b4d2f4322edcf63a6737b92a29dd1f5"><td class="memTemplParams" colspan="2">template&lt;typename genType &gt; </td></tr>
<tr class="memitem:ga9b4d2f4322edcf63a6737b92a29dd1f5"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga9b4d2f4322edcf63a6737b92a29dd1f5">two_thirds</a> ()</td></tr>
<tr class="memdesc:ga9b4d2f4322edcf63a6737b92a29dd1f5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 2 / 3.  <a href="a00162.html#ga9b4d2f4322edcf63a6737b92a29dd1f5">More...</a><br /></td></tr>
<tr class="separator:ga9b4d2f4322edcf63a6737b92a29dd1f5"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="memitem:ga788f5a421fc0f40a1296ebc094cbaa8a"><td class="memTemplItemLeft" align="right" valign="top">GLM_FUNC_DECL GLM_CONSTEXPR genType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00162.html#ga788f5a421fc0f40a1296ebc094cbaa8a">zero</a> ()</td></tr>
<tr class="memdesc:ga788f5a421fc0f40a1296ebc094cbaa8a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return 0.  <a href="a00162.html#ga788f5a421fc0f40a1296ebc094cbaa8a">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Provide a list of constants and precomputed useful values. </p>
<p>&lt;<a class="el" href="a00019.html" title="GLM_GTC_constants ">glm/gtc/constants.hpp</a>&gt; need to be included to use these features. </p>
<h2 class="groupheader">Function Documentation</h2>
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<p>Return e constant. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return the epsilon constant for floating point types. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return Euler's constant. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 4 / pi. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return the golden ratio constant. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return pi / 2. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return ln(ln(2)). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return ln(10). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return ln(2). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 1. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 1 / pi. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 1 / sqrt(2). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 1 / (pi * 2). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return the pi constant. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return pi / 4. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return sqrt(5). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return sqrt(pi / 2). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return sqrt(ln(4)). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return square root of pi. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return sqrt(3). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return sqrt(2). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return sqrt(2 * pi). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 1 / 3. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return pi / 2 * 3. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 2 / pi. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 2 / sqrt(pi). </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return pi * 2. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 2 / 3. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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<p>Return 0. </p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="a00162.html" title="Provide a list of constants and precomputed useful values. ">GLM_GTC_constants</a> </dd></dl>

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