function - string ends with

<div class="Section1"><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Hello All:</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Is anyone aware of a function in PgSQL that will check if a string ends with a specific
string?</span></font><pclass="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt; 
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">I.e.   rposition(substring in string )  returns int</span></font><p class="MsoNormal"><font
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font-family:Arial">        Starts searching right to left within string</span></font><p class="MsoNormal"><font
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font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Thanks for your attention to this matter.</span></font><p class="MsoNormal"><font face="Arial"
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font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size:10.0pt;font-family:Arial">KevinDuffy</span></font><p class="MsoNormal"><font face="Times New Roman"
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12.0pt"> </span></font></div>