Module:Roman/doc: Difference between revisions

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{{module ratingHigh-use|beta3700+}}

{{Module rating|protected}}

{{Lua sidebar}}

This module implements the {{tlTl|Roman}} template. For behavioral documentation, please see the template page. For test cases, please see [[Template:Roman/testcases]].

* Module supports 0 as a Roman numeral, displays as 'N'.

* Prior to 25 April 2016, used to display 69105 as <span style="text-decoration:overline;">LXV</span>MMMMCV. With the addition of <span style="text-decoration:overline;">IX</span> and <span style="text-decoration:overline;">IV</span> being 9000 and 4000 respectively, we now display 69105 as <span style="text-decoration:overline;">LXIX</span>CV.

* Module handles decimal, fractional, and arithmetic expressions to a precision of 1/1728. {{Green|Uses <code>#expr:</code> at line 122.}}

== Handling tricky cases (like 0.00001 and 99.99999) ==

# Find the Roman numerals for the integer part of the number.

# If the number is not an integer:

#* Add half of the smallest unit (1/1728) to simulate rounding instead of truncation.

#* Ensure this new result is between 1/1728 and 1727/1728. (actually 1.1/1728 and 1727.1/1728 due to floating point rounding issues)

# Hence, 0.00001 is guaranteed to have at least the smallest unit symbol (instead of being blank or 0), and 99.99999 does not display as 100 or 99 and 2 halves.

== Validation ==

* [[Template:Roman/testcases]]

* [[Module:Roman/testcases]] - does not contain fractional/decimal tests

* The template supports <code>subst:</code> and <code>safesubst:</code>.

<noinclude>

[[pt:Módulo:Roman/doc]]

</noinclude>