index-entry-c49192fa8c8d7405bca27fccb88443c3a31b82f9" class="index-entry"></a> <!-- real; inv_chi_square_lpdf; (reals y | reals nu); -->
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<p><code>real</code> <strong><code>inv_chi_square_lpdf</code></strong><code>(reals y | reals nu)</code><br> The log of the inverse Chi-square density of y given degrees of freedom nu</p>
<small><i>Available since 2.12</i></small>
<a id="index-entry-a5086fcc0bf03bde2c07057468cd23a2936131b7" class="index-entry"></a> <!-- real; inv_chi_square_lupdf; (reals y | reals n