or</a>
          is to throw a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">overflow_error</span></code> exception, applications
          which have come to reply rely on these functions not throwing may experience
          exceptions where they did not before. The special functions involved are
          <a class="link" href="sf_gamma/igamma_inv.html" title="Incomplete Gamma Function Inverses">gamma_p_inva</a>,
          <a class=