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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>My limited skills in looking at the code only found <o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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color:#1F497D'>df1b2variable gammln(const df1b2variable& _xx);<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>So it may be defined for a single value but not a vector, so you
might have to loop over the elements in the vector one at a time.<o:p></o:p></span></p>
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color:#1F497D'>Mark<o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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