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Template:Convert/numdisp (view source)
Revision as of 21:43, 6 November 2012
, 21:43, 6 November 20121 revision
<noinclude><!--
--============================================================
-- Display a number, with optional fraction part: 6+3/8
--============================================================
-- (see NOTES at bottom)
--
--></noinclude>{{#if:{{#titleparts:{{{1|-1200-3~118}}}|1|2}}
|{{Convert/numdisp/frac
|{{{1|-1200-3/118}}}|{{#titleparts:{{{1|-1200-3/118}}}|1|1}}|{{#titleparts:{{{1|-1200-3/118}}}|1|2}}}}<!--split at "/"
--else-->|{{#ifexpr:{{{1|-14000.00}}} < 0
|<!--then re-build negative number (see NOTE Z4 below)
-->{{formatnum:
{{padright:−<!--&minus-->{{#expr:-{{{1|-14000.00}}} }}<!--endexpr
--put decimal if needed-->{{
#ifexpr:{{{1|-14000.00}}}0={{{1|-14000.00}}}
and {{{1|-14000.00}}}=floor( {{{1|-14000.00}}} )|.}}<!--
-->|{{strlen_short|{{{1|-14000.00}}}|}}<!--endstrlen_short
-->|0}}<!--endpadright end-zeroes "0" to original length
-->}}<!--endformatnum
else-->|{{formatnum: {{{1|6000.500}}} }}}}<!--endif {1}<0
-->}}<noinclude><!--endif {#titleparts..}
--------------------------------------------------------------
--NOTES:
-- [ These comments are skipped by <noinclude> and not sent
-- in formatted Internet pages, only during edit. ]
--
--NOTE A1: This template processes a number, for display, by
-- checking to display a fraction part ("/"), else it
-- will check for negative to display a unicode &minus
-- and {{formatnum:{{#expr:abs( {{{1|-6000}}} )}}}} such
-- as "-6000" with a full minus sign rather than hyphen.
-- In 99% of Wikipedia usage, there are no fractions.
--
--NOTE D2: The check, for fraction parts, uses parser-function
-- #titleparts to split the number at "/" (if any) and
-- then checks part 2 (the denominator, after the slash)
-- to trigger use of {{Convert/numdisp/fracparts}}. Hence,
-- #if: {{#titleparts:{{{1|6+3/8}}}|1|2}}
-- will be true if a denominator exists (such as "8").
--
--NOTE N3: This template uses minimal expansion depth of the
-- if-else logic by checking for "/" before invoking the
-- nested subtemplate {{Convert/numdisp/fracparts}}. The
-- check for a negative number increases the nesting depth
-- by 1 level to apply abs({1}) in a nested {#expr:} parser
-- function, to use the absolute value of the amount {1}.
--
--NOTE Z4: Any end-zeroes on a decimal are preserved by not
-- using positive amounts in an expression, and for rare
-- negative amounts, the &minus with inverse -{1} is padded
-- by {padright:} with end-zeroes "0" to {strlen_short} but
-- uses #ifexpr:{1}0={1} and floor({1})={1} to put ".".
-- So, {strlen_short} keeps minimal expansion depth of +2.
--
-- WARNING: *** DO NOT DELETE COMMENTS FROM THIS TEMPLATE ***
-- Unless these comments are readily available, people
-- might tinker with the coding (or rename templates),
-- in hopes to clarify operation because these comments
-- were not nearby to explain the issues. Having these
-- comments only on a doc-page increases the danger of
-- explanations no longer matching the current coding.
-- UPDATE these comments to match changes to the template.
-- UPDATE the HISTORY during major changes (not typos).
--
--------------------------------------------------------------
--HISTORY:
--03Apr09 Created by [[User:Jimp]] on English Wikipedia.
--19Nov10 Invokes subtemplate only if has denominator (at "/").
--19Nov10 Put NOTES comments to explain template coding.
--19Nov10 Put HISTORY comments to log major changes.
--19Nov10 Put all parameters on 1 line to avoid newline "2^ /3"
--20Nov10 Linked {Documentation} to hold any interwiki links.
--12Feb11 Shows Unicode &minus ("−") for negative numbers.
--17Feb11 Used {padright:} to re-add end-zeroes on negatives.
--17Feb11 Used #ifexpr:{1}0={1} and floor({1})={1}, to put "."
--
** Add interwiki links to /doc subpage to avoid changes here **
--
-->{{Documentation}}
</noinclude>
--============================================================
-- Display a number, with optional fraction part: 6+3/8
--============================================================
-- (see NOTES at bottom)
--
--></noinclude>{{#if:{{#titleparts:{{{1|-1200-3~118}}}|1|2}}
|{{Convert/numdisp/frac
|{{{1|-1200-3/118}}}|{{#titleparts:{{{1|-1200-3/118}}}|1|1}}|{{#titleparts:{{{1|-1200-3/118}}}|1|2}}}}<!--split at "/"
--else-->|{{#ifexpr:{{{1|-14000.00}}} < 0
|<!--then re-build negative number (see NOTE Z4 below)
-->{{formatnum:
{{padright:−<!--&minus-->{{#expr:-{{{1|-14000.00}}} }}<!--endexpr
--put decimal if needed-->{{
#ifexpr:{{{1|-14000.00}}}0={{{1|-14000.00}}}
and {{{1|-14000.00}}}=floor( {{{1|-14000.00}}} )|.}}<!--
-->|{{strlen_short|{{{1|-14000.00}}}|}}<!--endstrlen_short
-->|0}}<!--endpadright end-zeroes "0" to original length
-->}}<!--endformatnum
else-->|{{formatnum: {{{1|6000.500}}} }}}}<!--endif {1}<0
-->}}<noinclude><!--endif {#titleparts..}
--------------------------------------------------------------
--NOTES:
-- [ These comments are skipped by <noinclude> and not sent
-- in formatted Internet pages, only during edit. ]
--
--NOTE A1: This template processes a number, for display, by
-- checking to display a fraction part ("/"), else it
-- will check for negative to display a unicode &minus
-- and {{formatnum:{{#expr:abs( {{{1|-6000}}} )}}}} such
-- as "-6000" with a full minus sign rather than hyphen.
-- In 99% of Wikipedia usage, there are no fractions.
--
--NOTE D2: The check, for fraction parts, uses parser-function
-- #titleparts to split the number at "/" (if any) and
-- then checks part 2 (the denominator, after the slash)
-- to trigger use of {{Convert/numdisp/fracparts}}. Hence,
-- #if: {{#titleparts:{{{1|6+3/8}}}|1|2}}
-- will be true if a denominator exists (such as "8").
--
--NOTE N3: This template uses minimal expansion depth of the
-- if-else logic by checking for "/" before invoking the
-- nested subtemplate {{Convert/numdisp/fracparts}}. The
-- check for a negative number increases the nesting depth
-- by 1 level to apply abs({1}) in a nested {#expr:} parser
-- function, to use the absolute value of the amount {1}.
--
--NOTE Z4: Any end-zeroes on a decimal are preserved by not
-- using positive amounts in an expression, and for rare
-- negative amounts, the &minus with inverse -{1} is padded
-- by {padright:} with end-zeroes "0" to {strlen_short} but
-- uses #ifexpr:{1}0={1} and floor({1})={1} to put ".".
-- So, {strlen_short} keeps minimal expansion depth of +2.
--
-- WARNING: *** DO NOT DELETE COMMENTS FROM THIS TEMPLATE ***
-- Unless these comments are readily available, people
-- might tinker with the coding (or rename templates),
-- in hopes to clarify operation because these comments
-- were not nearby to explain the issues. Having these
-- comments only on a doc-page increases the danger of
-- explanations no longer matching the current coding.
-- UPDATE these comments to match changes to the template.
-- UPDATE the HISTORY during major changes (not typos).
--
--------------------------------------------------------------
--HISTORY:
--03Apr09 Created by [[User:Jimp]] on English Wikipedia.
--19Nov10 Invokes subtemplate only if has denominator (at "/").
--19Nov10 Put NOTES comments to explain template coding.
--19Nov10 Put HISTORY comments to log major changes.
--19Nov10 Put all parameters on 1 line to avoid newline "2^ /3"
--20Nov10 Linked {Documentation} to hold any interwiki links.
--12Feb11 Shows Unicode &minus ("−") for negative numbers.
--17Feb11 Used {padright:} to re-add end-zeroes on negatives.
--17Feb11 Used #ifexpr:{1}0={1} and floor({1})={1}, to put "."
--
** Add interwiki links to /doc subpage to avoid changes here **
--
-->{{Documentation}}
</noinclude>
