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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2020, the Aether Development Team (see doc/dev_team.md for members)</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Full license can be found in License.md</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>  </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#ifndef INCLUDE_CONSTANTS_H_</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#define INCLUDE_CONSTANTS_H_</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>  </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>  </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// Physical Constants</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// - Naming standards:</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// - Names start with a "c" to indicate they are constants</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// - Names should be all CAPS (except for "c" at start)</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// - Should use common abbreviations for names and not whole names</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// avogadros_number (per mole)</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">const</span> precision_t cNA = 6.02214086e23;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// boltzmanns_constant (m2 kg /s2 /K)</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">const</span> precision_t cKB = 1.38064852e-23;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// Universal Gas Constant (J/K/mol)</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">const</span> precision_t cR = cNA * cKB;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// Mass of a proton (kg)</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">const</span> precision_t cMP = 1.6726219e-27;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// Atomic Mass Unit (kk)</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">const</span> precision_t cAMU = cMP;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// Mass of an electron (kg)</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">const</span> precision_t cME = 9.1094e-31;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// Plancks Constant (Js)</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">const</span> precision_t cH = 6.6261e-34;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// Elemental Charge (C (J/eV))</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">const</span> precision_t cE = 1.6022e-19;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// Speed of Light (m/s)</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">const</span> precision_t cC = 2.9979e8;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">// Stellar constants:</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">// gravitational_constant (m3/kg/s2)</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">const</span> precision_t cG = 6.67408e-11;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment">// This is for our sun (solar mass in kg):</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">const</span> precision_t cMSOL = 1.989e30;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// Some constants for time</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">const</span> std::vector<int> cDAYS {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">const</span> <span class="keywordtype">int</span> cREFYEAR = 1965;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cREFJULIAN = 2438762.0;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cJULIAN2000 = 2451545.0;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">// Some Constants for Angles</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  </div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="keyword">const</span> precision_t cPI = 3.141592653589793;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">const</span> precision_t cTWOPI = 2*cPI;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment">// Conversion Constants:</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment">// - Naming standards:</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">// - Names start with a "c" to indicate they are constants</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment">// - Names have a lower-case "to" in them to indicate conversion</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// - Names are all UPPER CASE otherwise</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keyword">const</span> precision_t cDtoR = cPI/180.0;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="keyword">const</span> precision_t cRtoD = 180.0/cPI;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// converting time between seconds and other units of time:</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment">// Years <-> Seconds:</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cYtoS = 31536000.0;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cStoY = 1.0 / cYtoS;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// Days <-> Seconds:</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cDtoS = 86400.0;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cStoD = 1.0 / cDtoS;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// Hours <-> Seconds:</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cHtoS = 3600.0;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cStoH = 1.0 / cHtoS;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment">// Minutes <-> Seconds:</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cMtoS = 60.0;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cStoM = 1.0 / cMtoS;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment">// MilliSeconds <-> Seconds:</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cMStoS = 1.0/1000.0;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">const</span> <span class="keywordtype">double</span> cStoMS = 1000.0;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment">// converting lengths between meters and other units of measurement:</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment">// kilometer <-> meter:</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">const</span> precision_t cKMtoM = 1000.0;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">const</span> precision_t cMtoKM = 1.0 / cKMtoM;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment">// Angstrom <-> Meter</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="keyword">const</span> precision_t cAtoM = 1.0e-10;</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment">// AU <-> Meter</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="keyword">const</span> precision_t cAUtoM = 1.495978707e11;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keyword">const</span> precision_t pcm3topm3 = 1e6; <span class="comment">// /cm3 to /m3</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="keyword">const</span> precision_t pcm2topm2 = 1e4; <span class="comment">// /cm2 to /m2</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="keyword">const</span> precision_t pcmtopm = 100.0; <span class="comment">// /cm to /m</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment">// B-Field</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment">// -------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">const</span> <span class="keywordtype">float</span> cNTtoT = 1e-9; <span class="comment">// nT to T</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="preprocessor">#endif // INCLUDE_CONSTANTS_H_</span></div>
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