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| author | deepakjadmin |
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| date | Wed, 20 Jan 2016 11:55:01 -0500 |
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| 1 <html> | |
| 2 <head> | |
| 3 <title>MayaChemTools:Code:Constants.pm</title> | |
| 4 <meta http-equiv="content-type" content="text/html;charset=utf-8"> | |
| 5 <link rel="stylesheet" type="text/css" href="../../../css/MayaChemToolsCode.css"> | |
| 6 </head> | |
| 7 <body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10"> | |
| 8 <br/> | |
| 9 <center> | |
| 10 <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a> | |
| 11 </center> | |
| 12 <br/> | |
| 13 <pre> | |
| 14 <a name="package-Constants-"></a> 1 <span class="k">package </span><span class="i">Constants</span><span class="sc">;</span> | |
| 15 2 <span class="c">#</span> | |
| 16 3 <span class="c"># $RCSfile: Constants.pm,v $</span> | |
| 17 4 <span class="c"># $Date: 2015/02/28 20:47:02 $</span> | |
| 18 5 <span class="c"># $Revision: 1.21 $</span> | |
| 19 6 <span class="c">#</span> | |
| 20 7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span> | |
| 21 8 <span class="c">#</span> | |
| 22 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span> | |
| 23 10 <span class="c">#</span> | |
| 24 11 <span class="c"># This file is part of MayaChemTools.</span> | |
| 25 12 <span class="c">#</span> | |
| 26 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span> | |
| 27 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span> | |
| 28 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span> | |
| 29 16 <span class="c"># later version.</span> | |
| 30 17 <span class="c">#</span> | |
| 31 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span> | |
| 32 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span> | |
| 33 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span> | |
| 34 21 <span class="c"># details.</span> | |
| 35 22 <span class="c">#</span> | |
| 36 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span> | |
| 37 24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span> | |
| 38 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span> | |
| 39 26 <span class="c"># Boston, MA, 02111-1307, USA.</span> | |
| 40 27 <span class="c">#</span> | |
| 41 28 | |
| 42 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span> | |
| 43 30 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span> | |
| 44 31 | |
| 45 32 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS)</span><span class="sc">;</span> | |
| 46 33 | |
| 47 34 <span class="i">@ISA</span> = <span class="q">qw(Exporter)</span><span class="sc">;</span> | |
| 48 35 | |
| 49 36 <span class="c"># Groups of constants...</span> | |
| 50 37 <span class="k">my</span><span class="s">(</span><span class="i">@MathConstants</span><span class="s">)</span> = <span class="q">qw(Pi TwoPi PiByTwo PiByFour InversePi OneByPi SqrtTwoPi OneBySqrtTwoPi InverseSqrtTwoPi Phi E BigNumber)</span><span class="sc">;</span> | |
| 51 38 | |
| 52 39 <span class="c"># Export all constants...</span> | |
| 53 40 <span class="i">@EXPORT</span> = <span class="s">(</span><span class="i">@MathConstants</span><span class="s">)</span><span class="sc">;</span> | |
| 54 41 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span> | |
| 55 42 | |
| 56 43 <span class="c"># Tags to export individual groups of constants...</span> | |
| 57 44 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span> | |
| 58 45 <span class="w">math</span> <span class="cm">=></span> <span class="s">[</span><span class="i">@MathConstants</span><span class="s">]</span><span class="cm">,</span> | |
| 59 46 <span class="w">all</span> <span class="cm">=></span> <span class="s">[</span><span class="i">@EXPORT</span><span class="cm">,</span> <span class="i">@EXPORT_OK</span><span class="s">]</span> | |
| 60 47 <span class="s">)</span><span class="sc">;</span> | |
| 61 48 | |
| 62 49 <span class="c"># Math constants..</span> | |
| 63 50 <span class="k">use</span> <span class="w">constant</span> <span class="s">{</span> | |
| 64 51 <span class="w">Pi</span> <span class="cm">=></span> <span class="i">CORE::</span><span class="k">atan2</span><span class="s">(</span><span class="n">0</span><span class="cm">,</span> <span class="n">-1</span><span class="s">)</span><span class="cm">,</span> | |
| 65 52 <span class="w">TwoPi</span> <span class="cm">=></span> <span class="n">2</span> * <span class="i">CORE::</span><span class="k">atan2</span><span class="s">(</span><span class="n">0</span><span class="cm">,</span> <span class="n">-1</span><span class="s">)</span><span class="cm">,</span> | |
| 66 53 <span class="w">PiByTwo</span> <span class="cm">=></span> <span class="i">CORE::</span><span class="k">atan2</span><span class="s">(</span><span class="n">1</span><span class="cm">,</span> <span class="n">0</span><span class="s">)</span><span class="cm">,</span> | |
| 67 54 <span class="w">PiByFour</span> <span class="cm">=></span> <span class="i">CORE::</span><span class="k">atan2</span><span class="s">(</span><span class="n">1</span><span class="cm">,</span> <span class="n">1</span><span class="s">)</span><span class="cm">,</span> | |
| 68 55 <span class="w">OneByPi</span> <span class="cm">=></span> <span class="n">1.0</span> / <span class="i">CORE::</span><span class="k">atan2</span><span class="s">(</span><span class="n">0</span><span class="cm">,</span> <span class="n">-1</span><span class="s">)</span><span class="cm">,</span> | |
| 69 56 <span class="w">InversePi</span> <span class="cm">=></span> <span class="n">1.0</span> / <span class="i">CORE::</span><span class="k">atan2</span><span class="s">(</span><span class="n">0</span><span class="cm">,</span> <span class="n">-1</span><span class="s">)</span><span class="cm">,</span> | |
| 70 57 <span class="w">SqrtTwoPi</span> <span class="cm">=></span> <span class="i">CORE::</span><span class="k">sqrt</span><span class="s">(</span><span class="n">2</span> * <span class="i">CORE::</span><span class="k">atan2</span><span class="s">(</span><span class="n">0</span><span class="cm">,</span> <span class="n">-1</span><span class="s">)</span><span class="s">)</span><span class="cm">,</span> | |
| 71 58 <span class="w">OneBySqrtTwoPi</span> <span class="cm">=></span> <span class="n">1</span> / <span class="i">CORE::</span><span class="k">sqrt</span><span class="s">(</span><span class="n">2</span> * <span class="i">CORE::</span><span class="k">atan2</span><span class="s">(</span><span class="n">0</span><span class="cm">,</span> <span class="n">-1</span><span class="s">)</span><span class="s">)</span><span class="cm">,</span> | |
| 72 59 <span class="w">InverseSqrtTwoPi</span> <span class="cm">=></span> <span class="n">1</span> / <span class="i">CORE::</span><span class="k">sqrt</span><span class="s">(</span><span class="n">2</span> * <span class="i">CORE::</span><span class="k">atan2</span><span class="s">(</span><span class="n">0</span><span class="cm">,</span> <span class="n">-1</span><span class="s">)</span><span class="s">)</span><span class="cm">,</span> | |
| 73 60 | |
| 74 61 <span class="w">Phi</span> <span class="cm">=></span> <span class="s">(</span><span class="n">1</span> + <span class="i">CORE::</span><span class="k">sqrt</span><span class="s">(</span><span class="n">5</span><span class="s">)</span><span class="s">)</span>/<span class="n">2</span><span class="cm">,</span> <span class="c"># Golden ratio...</span> | |
| 75 62 | |
| 76 63 <span class="w">E</span> <span class="cm">=></span> <span class="i">CORE::</span><span class="k">exp</span><span class="s">(</span><span class="n">1</span><span class="s">)</span><span class="cm">,</span> | |
| 77 64 | |
| 78 65 <span class="w">BigNumber</span> <span class="cm">=></span> <span class="n">2</span>**<span class="n">31</span> - <span class="n">1</span><span class="cm">,</span> <span class="c"># Unsigned 31 bit number</span> | |
| 79 66 | |
| 80 67 <span class="s">}</span><span class="sc">;</span> | |
| 81 68 | |
| 82 <a name="EOF-"></a></pre> | |
| 83 <p> </p> | |
| 84 <br /> | |
| 85 <center> | |
| 86 <img src="../../../images/h2o2.png"> | |
| 87 </center> | |
| 88 </body> | |
| 89 </html> |