Difference between revisions of "Template:IsLeapYear"

Latest revision as of 06:16, April 9, 2008

1

year defaults to {{ CURRENTYEAR}} = 2024

.

Formula:: {{#expr: ((({{{1}}}) mod 4 = 0) and (({{{1}}}) mod 100 != 0)) or (({{{1}}}) mod 400 = 0)}}; Use {{subst:IsLeapYear}} to get this code ready for optional substitution into another template.
Sanity check:: {{ IsLeapYear|2007}} gives 0

, 2007 is no leap year.

{{ IsLeapYear|2008}} gives 1

, 2008 is a leap year.

{{ IsLeapYear|2100}} gives 0

, 2100 is no leap year.

{{ IsLeapYear|2400}} gives 1

, 2400 is a leap year.

{{ IsLeapYear|1500}} gives 0

{{ IsLeapYear|-100}} gives 0

for 101 BC (mostly pointless).

{{ IsLeapYear|502*4-8}} gives 1

, guess why.

Results for fractions like {{ IsLeapYear|2000.9}} = 1

are unspecified, even if it apparently gives an "expected" result at the moment this might change without notice.

@@ Line 1: / Line 1: @@
 {{{{{subst|}}}#expr: ((({{{1|{{CURRENTYEAR}}}}}) mod 4 = 0) and (({{{1|{{CURRENTYEAR}}}}}) mod 100 != 0)) or (({{{1|{{CURRENTYEAR}}}}}) mod 400 = 0)}}<noinclude>
+----
+; Usage&#58;
+: {{Tlx|{{PAGENAME}}|''year''}}
+: ''year'' defaults to {{evaldemo|CURRENTYEAR|&#61;}}.
+; Formula&#58;
+: <nowiki>{{#expr: ((({{{1}}}) mod 4 = 0) and (({{{1}}}) mod 100 != 0)) or (({{{1}}}) mod 400 = 0)}}</nowiki>
+: Use {&#123;subst:{{PAGENAME}}&#125;} to get this code ready for [[Help:Substitution#Optional_substitution|optional substitution]] into another template.
+; Sanity check&#58;
+: {{evaldemo/3|{{PAGENAME}}|2007}}, 2007 is no leap year.
+: {{evaldemo/3|{{PAGENAME}}|2008}}, 2008 is a leap year.
+: {{evaldemo/3|{{PAGENAME}}|2100}}, 2100 is no leap year.
+: {{evaldemo/3|{{PAGENAME}}|2400}}, 2400 is a leap year.
+: {{evaldemo/3|{{PAGENAME}}|1500}}, [[w:en:Proleptic Gregorian calendar|proleptic Gregorian calendar]].
+: {{evaldemo/3|{{PAGENAME}}|-100}} for 101 BC (mostly pointless).
+: {{evaldemo/3|{{PAGENAME}}|502*4-8}}, guess why.
+Results for fractions like {{evaldemo/3|{{PAGENAME}}|2000.9|5==}} are unspecified, even if it apparently gives an "expected" result at the moment this might change without notice.
 </noinclude>
+<noinclude>[[Category:Calendar templates|IsLeapYear]]</noinclude>