Difference between revisions of "Template:RomanPageToNegativeArabic"
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Line 12: | Line 12: | ||
-->{{#if: {{IsNumber|value={{{value|}}}|}}<!-- | -->{{#if: {{IsNumber|value={{{value|}}}|}}<!-- | ||
-->|<!-- | -->|<!-- | ||
− | --><!-- the value is an | + | --><!-- the value is an Arabic number: return it |
-->{{{value}}}<!-- | -->{{{value}}}<!-- | ||
--><!-- | --><!-- | ||
-->|<!-- | -->|<!-- | ||
− | --><!-- the value is not | + | --><!-- the value is not Arabic: assume its roman and try to convert |
− | -->{{#expr: {{#tag: | + | -->{{#expr: {{#tag:{{{value|}}}|}} - 100000 }}<!-- |
+ | --><!-- the old code: {{#expr: {{#tag:roman|{{{value|}}}|}} - 100000 }} | ||
--><!-- | --><!-- | ||
-->}}<!-- if is number | -->}}<!-- if is number | ||
--></includeonly> | --></includeonly> |
Revision as of 22:47, 24 December 2021
Use this template to convert a roman page number into a negative arabic number, where zero the roman zero is treated as -100000. Thus, the roman number is converted into arabic value, and the result is -100000 + value. For instance, if value=x
, the template will return -99990. If value=iv
, the template will return -99996. If an empty string is passed as a value, an empty string is returned. All non roman characters are ignored.
This is useful when storing the first page number of a publication for sorting purposes.
NOTE: As any "printing" template, it doesn't store any values anywhere, but merely prints them on the page.
Parameters:
|value=
- the roman page number to convert. E.g. "xiv", "lx", "mmx", etc.