Template:Val/delimitnum: Difference between revisions

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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}}<!--
          {{#invoke:String|sub|{{{1|0}}}|2|2}}|.|0}}<!--And then
    -->|{{{1|0}}}<!--
          then if next char is . then output a zero, else do || nothing.
    -->|u={{{u}}}<!--
    -->{{#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 13:41, 3 September 2020