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3 | <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> |
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4 | <head> |
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5 | <title>leapyr.pro (SAXO Documentation Assistant)</title> |
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48 | <a href="julday.html"><img src="./../prev.gif" border="0" alt="Previous"></a></td> |
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49 | <td width="80%" align="center" valign="center"> |
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50 | <font size=-1><i>SAXO Documentation Assistant</i>: <a href="./../home.html">Overview</a></font></td> |
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51 | <td width="10%" align="right"> |
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52 | <a href="monthname.html"><img src="./../next.gif" border="0" alt="Next"></a></td> |
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54 | </table> |
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55 | |
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56 | |
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57 | <h1><font size="-2">Calendar/</font></h1> |
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58 | <h2>leapyr.pro</h2> |
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59 | |
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60 | <dl> |
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61 | </dl> |
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62 | |
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63 | |
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64 | determine whether the input year is a leap year or not |
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65 | Very useful for finding number of days in a year. |
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66 | eg. NUM_DAYS_IN_YR = 365 + leapyr(year) |
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67 | |
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68 | |
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69 | |
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70 | |
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71 | |
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72 | <a name="#_leapyr"></a> |
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73 | |
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74 | <h2>leapyr <font size="-1" color="#006633"> |
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75 | Calendar |
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76 | </font></h2> |
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77 | |
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78 | <p><font face="Courier"><i>result = </i>leapyr(<i><a href="#_leapyr_keyword_year">year</a></i>)</font></p> |
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79 | |
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80 | |
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81 | |
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82 | |
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83 | <h3>Return value</h3> |
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84 | 0 then not a leap year, 1 then year is a leap year |
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85 | with the same number of elements than year. |
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86 | |
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87 | |
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88 | |
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89 | <h3>Parameters</h3> |
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90 | |
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91 | |
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92 | <a name="#_leapyr_keyword_year"></a> |
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93 | <h4>year |
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94 | <font size="-1" color="#006633">in</font> |
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95 | |
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96 | |
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97 | <font size="-1" color="#006633">required</font> |
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98 | |
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99 | <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i> scalar or array</i></font> |
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100 | |
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101 | |
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102 | </h4> |
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103 | |
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104 | |
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105 | year to be tested as a leap year. |
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106 | |
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107 | |
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108 | |
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109 | |
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110 | |
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111 | |
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112 | <h3>Examples</h3><pre> |
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113 | IDL> result = leapyr(2000) |
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114 | |
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115 | </pre><h3>Version history</h3> |
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116 | |
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117 | <h4>Version</h4> |
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118 | $Id: leapyr.pro 371 2008-08-07 09:32:02Z pinsard $ |
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119 | |
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120 | <h4>History</h4> |
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121 | |
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122 | Originally Written by: Trevor Harris, Physics Dept., University of Adelaide, |
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123 | 20/09/88 |
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124 | |
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125 | November 2004: correction for century years... S. Masson; |
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126 | |
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127 | Every year divisible by 4 is a leap year. |
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128 | But every year divisible by 100 is NOT a leap year |
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129 | Unless the year is also divisible by 400, then it is still a |
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130 | leap year. |
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131 | This means that year 1800, 1900, 2100, 2200, 2300 and 2500 are |
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132 | NOT leap years, while year 2000 and 2400 are leap years. |
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133 | + supress the automatic change 89 -> 1989 |
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134 | |
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135 | June 2005 update for new commons, Sebastien Masson. |
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136 | |
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137 | |
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138 | |
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139 | |
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140 | |
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141 | |
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142 | |
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143 | |
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144 | |
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145 | <h3>Other attributes</h3> |
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146 | |
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147 | |
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148 | <h4>Uses routines</h4> |
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149 | <a href="..//Commons/cm_4cal.html">cm_4cal</a> |
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150 | |
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151 | |
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152 | |
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153 | |
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154 | |
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155 | <font size="-3"><p> </p></font> |
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156 | <hr size="1" color="#CCCCCC"/> |
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158 | |
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159 | |
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160 | |
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161 | <p><font color="gray" size="-3"> Produced by IDLdoc 2.0.</font></p> |
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162 | |
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163 | </body> |
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164 | </html> |
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