<dd>
    <p><!-- https://go.dev/issue/50489, CL 539299 -->
      The new method <a href="/pkg/math/big#Rat.FloatPrec"><code>Rat.FloatPrec</code></a> computes the number of fractional decimal digits
      required to represent a rational number accurately as a floating-point number, and whether accurate decimal representation
      is possible in the first place.
    </p>
  </dd>
</dl><!-- math/big -->

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