Long year: Difference between revisions
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→{{header|Forth}}: Add ? to predicate word.
m (→{{header|APL}}: simplify dec31wd expression slightly) |
m (→{{header|Forth}}: Add ? to predicate word.) |
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=={{header|Forth}}==
<lang forth>: dec31wd ( year -- weekday ) dup dup 4 / swap dup 100 / swap 400 / swap - + + 7 mod ;
: long? ( year -- flag ) dup dec31wd 4 = if drop 1 else 1 - dec31wd 3 = if 1 else 0 then then ;
: demo ( startyear endyear -- ) cr swap do i long? if i . then loop cr ;</lang>
{{Out}}
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