class="literal">np</code>) that it converts to its textual representation.
        <code class="literal">cp</code> is the buffer that should hold the result of the
        operation. The parameter <code class="literal">right</code> specifies, how many digits
        right of the decimal point should be included in the output. The result
        will be rounded to this number of decimal digits. Setting
        <code class="literal">right</code> to -1 indicates that all available decimal digits
        should