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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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| 6 | </head> |
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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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| 53 | </tr> |
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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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[242] | 74 | <h2>leapyr <font size="-1" color="#006633"> |
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[163] | 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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[242] | 83 | <h3>Return value</h3> |
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[163] | 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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[234] | 99 | <font size="-1" color="#006633">type:</font> <font size="-1" color="#006633"><i> scalar or array</i></font> |
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[163] | 100 | |
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| 101 | |
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| 102 | </h4> |
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| 103 | |
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[234] | 104 | |
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| 105 | year to be tested as a leap year. |
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[163] | 106 | |
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[234] | 112 | <h3>Examples</h3><pre> |
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[163] | 113 | IDL> result = leapyr(2000) |
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| 114 | |
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[234] | 115 | </pre><h3>Version history</h3> |
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[163] | 116 | |
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[234] | 117 | <h4>Version</h4> |
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[338] | 118 | $Id: leapyr.pro 327 2007-12-13 16:22:35Z pinsard $ |
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[163] | 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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| 144 | |
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| 145 | <h3>Other attributes</h3> |
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| 146 | |
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| 147 | |
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[234] | 148 | <h4>Uses routines</h4> |
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| 149 | cm_4cal |
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[163] | 150 | |
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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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[187] | 161 | <p><font color="gray" size="-3"> Produced by IDLdoc 2.0.</font></p> |
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[163] | 162 | |
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| 163 | </body> |
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[249] | 164 | </html> |
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