10b1184a8d6d39ee650" class="index-entry"></a> <!-- real; inv_gamma_lpdf; (reals y | reals alpha, reals beta); -->
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<p><code>real</code> <strong><code>inv_gamma_lpdf</code></strong><code>(reals y | reals alpha, reals beta)</code><br> The log of the inverse gamma density of y given shape alpha and scale beta</p>
<small><i>Available since 2.12</i></small>
<a id="index-entry-c799b2a02063b44bf348b1e09d1a2bdbb8fefbd5" class="index-entry"></a> <!-- real; inv_gamma_lupdf; (reals y | reals alpha, reals beta);