Template: Inflation

<includeonly>{{<!--
1: if a mandatory field is unspecified, return error, else next test
-->#ifexpr:
    {{#if:{{{value|{{{2|}}}}}}|0|1}}
    or {{#if:{{{start_year|{{{3|}}}}}}|0|1}}
   |<span class="error">Error when using {{tl|Inflation}}:<!--
 --> {{Separated entries|separator=,&#32;|conjunction=&#32;and&#32;
     |{{#if:{{{index|{{{1|}}}}}}||{{para|index}} (parameter 1)}}
     |{{#if:{{{value|{{{2|}}}}}}||{{para|value}} (parameter 2)}}
     |{{#if:{{{start_year|{{{3|}}}}}}||{{para|start_year}} (parameter 3)}}
     }} must be specified.</span><!--
 -->{{#if:{{{nocat|}}}||{{main other|[[Category:Pages with errors in inflation template]]}}}}<!--

-->|{{<!--
2: if index code is unrecognized, return error, else next test
 -->#ifexpr:
     not(
      {{#ifexist:Template:Inflation/{{{index|{{{1}}}}}}|1|0}}
      and {{Isnumeric|{{Inflation/year|{{{index|{{{1}}}}}}}}|boolean=true}}
     )
    |<span class="error">Error when using {{tl|Inflation}}:<!--
  --> {{para|index|'''{{{index|{{{1}}}}}}'''}} (parameter 1) not a recognized index.</span><!--
  -->{{#if:{{{nocat|}}}||{{main other|[[Category:Pages with errors in inflation template]]}}}}<!--

 -->|{{<!--
3: if a numeric parameter contain invalid data, return error, else next test
  -->#ifexpr:
      not(
       {{Isnumeric|{{{value|{{{2}}}}}}|boolean=true}}
       and {{Isnumeric|{{{start_year|{{{3}}}}}}|boolean=true}}
       and {{#if: {{{end_year|{{{4|}}}}}} | {{Isnumeric|{{{end_year|{{{4}}}}}}|boolean=true}} | 1 }}
       and {{#if: {{{r|}}} | {{Isnumeric|{{{r}}}|boolean=true}} | 1 }}
      )
     |<span class="error">Error when using {{tl|Inflation}}:<!--
   --> [[NaN]], check parameters for non-numeric data:<!--
   --> {{Separated entries|separator=,&#32;|conjunction=&#32;and&#32;
       |{{Ifnumber|{{formatnum:{{{value|{{{2}}}}}}|R}}||{{para|value|'''{{{value|{{{2}}}}}}'''}} (parameter 2)}}
       |{{Ifnumber|{{formatnum:{{{start_year|{{{3}}}}}}|R}}||{{para|start_year|'''{{{start_year|{{{3}}}}}}'''}} (parameter 3)}}
       |{{#if: {{{end_year|{{{4|}}}}}} | {{Ifnumber|{{formatnum:{{{end_year|{{{4}}}}}}|R}}||{{para|end_year|'''{{{end_year|{{{4}}}}}}'''}} (parameter 4)}} }}
       |{{#if: {{{r|}}} | {{Ifnumber|{{formatnum:{{{r}}}|R}}||{{para|r|'''{{{r}}}'''}}}} }}
       }}.</span><!--
   -->{{#if:{{{nocat|}}}||{{main other|[[Category:Pages with errors in inflation template]]}}}}<!--

  -->|{{<!--
4: if a parameter is out of calculable bounds, return error, else proceed
   -->#ifexpr:
       not(
        ( {{{start_year|{{{3}}}}}} >= {{Inflation/{{{index|{{{1}}}}}}/startyear}} )
        and(
         ( {{{start_year|{{{3}}}}}} <= {{{end_year|{{{4|{{Inflation/year|{{{index|{{{1}}}}}}}}}}}}}} )
         or ( {{{start_year|{{{3}}}}}} = {{{end_year|{{{4|{{CURRENTYEAR}}}}}}}} )
        )
        and ( {{{end_year|{{{4|{{Inflation/year|{{{index|{{{1}}}}}}}}}}}}}} <= {{Inflation/year|{{{index|{{{1}}}}}}}} )
       )
      |<span class="error">Error when using {{tl|Inflation}}:<!--
    --> {{Separated entries|separator=,&#32;|conjunction=&#32;and&#32;
        |{{<!-- 4a: [parameter 3/start_year] too low -->
         #ifexpr: {{{start_year|{{{3}}}}}} < {{Inflation/{{{index|{{{1}}}}}}/startyear}}
         |{{para|start_year|'''{{{start_year|{{{3}}}}}}'''}} (parameter 3)<!--
       --> is lower than the earliest available year ('''{{Inflation/{{{index|{{{1}}}}}}/startyear}}''')<!--
       --> in index "'''{{{index|{{{1}}}}}}'''"<!--
      -->}}
        |{{<!-- 4b: [parameter 3/start_year] greater than [parameter 4/end_year]
                ...and not equal to {{CURRENTYEAR}} if [parameter 4/end_year] is unspecified -->
         #ifexpr:
          ( {{{start_year|{{{3}}}}}} > {{{end_year|{{{4|{{Inflation/year|{{{index|{{{1}}}}}}}}}}}}}} )
          and ( {{{start_year|{{{3}}}}}} != {{{end_year|{{{4|{{CURRENTYEAR}}}}}}}} )
         |{{para|start_year|'''{{{start_year|{{{3}}}}}}'''}} (parameter 3)<!--
       --> is greater than<!--
       --> {{<!--
        -->#if:{{{end_year|{{{4|}}}}}}<!--
        -->|{{para|end_year|'''{{{end_year|{{{4}}}}}}'''}} (parameter 4)<!--
        -->|the latest available year ('''{{Inflation/year|{{{index|{{{1}}}}}}}}''')<!--
         --> in index "'''{{{index|{{{1}}}}}}'''"<!--
        -->}}<!--
      -->}}
        |{{<!-- 4c: [parameter 4/end_year] greater than [parameter 1/index] highest year -->
         #ifexpr: {{{end_year|{{{4|{{Inflation/year|{{{index|{{{1}}}}}}}}}}}}}} > {{Inflation/year|{{{index|{{{1}}}}}}}}
         |{{para|end_year|'''{{{end_year|{{{4}}}}}}'''}} (parameter 4)<!--
       --> is greater than the latest available year ('''{{Inflation/year|{{{index|{{{1}}}}}}}}''')<!--
       --> in index "'''{{{index|{{{1}}}}}}'''"<!--
      -->}}<!--
     -->}}.</span><!--
    -->{{#if:{{{nocat|}}}||{{main other|[[Category:Pages with errors in inflation template]]}}}}<!--

   -->|<!--
begin template proper
-->{{#ifeq:{{{orig|}}}|yes|{{{cursign|$}}}{{{2}}} (}}{{#ifeq:{{{fmt|raw}}}|eq|equivalent to {{{cursign|$}}}}}<!--
-->{{formatnum:
    {{
    #iferror:
     {{#invoke:Math|round|1={{
     #expr:
      {{formatnum:{{{value|{{{2}}}}}}|R}}
      {{#ifeq:{{{start_year|{{{3}}}}}}|{{CURRENTYEAR}}
        | * 1
        | {{Inflation/{{{index|{{{1}}}}}}|{{{start_year|{{{3}}}}}}|{{{end_year|{{{4|{{Inflation/year|{{{index|{{{1}}}}}}}}}}}}}}}}
        }}
      round {{{r|0}}}
     }}|2={{{r|0}}}}}
    |<span class="error">Error when using {{tl|Inflation}}:<!--
  --> [[NaN]]/calculation error, please notify [[Template talk:Inflation]].</span><!--
  -->{{main other|[[Category:Pages with errors in inflation template]]}}<!--
     this error indicates template bug, always categorize
 -->}}
   |{{#ifeq:{{{fmt|raw}}}|raw|R|}}
   }}<!--
-->{{#ifeq:{{{fmt|raw}}}|eq|&#32;in<!--
 --> {{<!--
  -->#ifeq:{{{start_year|{{{3}}}}}}|{{CURRENTYEAR}}<!--
  -->|{{CURRENTYEAR}}<!--
  -->|{{{end_year|{{{4|{{Inflation/year|{{{index|{{{1}}}}}}}}}}}}}}<!--
  -->}}<!--
-->}}<!--
end template proper

   -->}}<!-- 4
  -->}}<!-- 3
 -->}}<!-- 2
-->}}<!-- 1 -->{{#ifeq:{{{orig|}}}|yes|)}}</includeonly><noinclude>
{{Documentation}}
</noinclude>