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<p>Other <code>_lupdf</code> and <code>_lupmf</code> functions used in the definition of <code>foo_lpdf</code> will drop additive constants when <code>foo_lupdf</code> is called and will not drop additive constants when <code>foo_lpdf</code> is called.</p>
<p>If there are <code>_lupdf</code> and <code>_lupmf</code> functions used inside the following call to <code>foo_lpdf</code>, they will be forced to normalize (retu