Fonctions

Syntaxe :

declare function prefix:function_name($parameter AS datatype)
as returnDatatype
{
 (: indtructions ... :)
    }

Exemple :

declare function local:prixTTC($prixHT as xs:decimal, $taux as xs:decimal)
as xs:decimal
{
 let $prixTTC := $prixHT * (1+$taux)
 return $prixTTC 
    };

Usage :
```
<h1>{local:prixTTC(20, .196)}</h1>
```