Difference between revisions of "Template:Val/delimitnum"

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blackwiki>Jimp
(allow for overriding formatting if u is AD, BC, etc. also allow formatting with commas for ±10^4 & over/under)
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<includeonly><!--
 
<includeonly><!--
                Test loss of precision by appending a fixed digit "1"
+
-->{{#ifeq: <!-- compare "04" to 4, and if so, output 4-digits pure
-->{{#ifexpr:({{{1|0}}}1)=({{{1|0}}})<!--
+
  What might be "04" is composed of three outputs: dot, len, and fmt -->
 +
  {{#invoke:String|find|{{{1}}}|.}}<!-- Output the zero if no dot.
 +
  -->{{#invoke:String|len <!-- Length of 4 with sign and spaces filtered? -->
 +
    |{{#invoke:String|replace|{{{1}}}|[-+ ]|plain=false}}}}<!--
 +
    That replace just filtered out any and all spaces, + or - characters.
 +
    But it's gotta have the minus sign first in the [-charclass].
 +
    Any fmt given?  If so comparison to "4" will fail -->{{{fmt|}}}
 +
| 4 |{{#invoke:String|replace|{{{1}}}|-|&minus;}}<!--  
 +
If fmt is nil, found . is 0, and filtered len is 4, then 04=4,
 +
and we have just output the number, replacing any - with a minus sign
  
  -->|<!--       Precision is lost. Display an error message.
+
Else:
  -->{{FormattingError|Too Many Digits|nocategory={{{nocategory|}}}}}<!--
+
-->|{{#switch: <!-- its not a pure 4-digit number with no fmt options given-->
 +
{{#invoke:String|sub|{{{1|0}}}|1|1}}
 +
  <!-- If the first char is ... -->
  
   -->|<!--       Precision is not lost. Display the number.
+
   |- <!-- ... one kind of dash, or another -->
  -->{{val/delimitnum/{{{fmt|gaps}}}<!--
+
  |− = {{#ifeq:{{{nosign|off}}}|off|−}}<!-- output a &minus; sign unless nosign
                    -->{{#expr:{{{1|0}}}<0}}<!--
+
    -->{{#ifeq:
                    -->{{#expr:trunc({{{1|0}}}9)={{{1|0}}}9}}|{{{1|0}}}<!--
+
          {{#invoke:String|sub|{{{1|0}}}|2|2}}|.|0}}<!--And then
    -->|u={{{u}}}<!--
+
          then if next char is . then output a zero, else do || nothing.
   -->}}<!--
+
    -->{{#switch: {{{fmt}}} <!-- Format the rest of the number. -->
 +
      |commas={{formatnum:{{#invoke:String|sub|{{{1|0}}}|2}}}}
 +
      |#default = {{#invoke:Gapnum|main|{{#invoke:String|sub|{{{1|0}}}|2}}}}
 +
   }}  
  
-->}}</includeonly><noinclude>{{documentation}}</noinclude>
+
  <!-- follow same logic for leading + char -->
 +
  |+={{#ifeq:{{{nosign|off}}}|off|+}}<!--
 +
    -->{{#ifeq:{{#invoke:String|sub|{{{1|0}}}|2|2}}|.|0}}<!--
 +
      -->{{#switch:{{{fmt}}}
 +
        |commas = {{formatnum:{{#invoke:String|sub|{{{1|0}}}|2}}}}
 +
        |#default = {{#invoke:Gapnum|main|{{#invoke:String|sub|{{{1|0}}}|2}}}}
 +
    }} <!-- follow similar logic for leading . char -->
 +
  |.=0<!--
 +
    -->{{#switch:{{{fmt}}}
 +
      |commas={{{1|0}}}
 +
      |#default = {{#invoke:Gapnum|main|{{{1|0}}}}}
 +
    }}
 +
 
 +
  <!-- Else if first char is not . or - or + -->
 +
  |#default = {{#switch:{{{fmt}}}
 +
    |commas={{formatnum:{{{1|0}}}}}
 +
    |#default = {{#invoke:Gapnum|main|{{{1|0}}}}}
 +
      }}
 +
  }}
 +
}}</includeonly><noinclude>{{documentation}}</noinclude>

Latest revision as of 09:37, 30 September 2020

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