
        This library uses the string representations specified by the C99 standard.
      </p>
<p>
        An example of an implementation that optionally includes the NaN payload
        information is at <a href="http://publib.boulder.ibm.com/infocenter/zos/v1r10/index.jsp?topic=/com.ibm.zos.r10.bpxbd00/fprints.htm" target="_top">AIX
        NaN fprintf</a>. That implementation specifies for Binary Floating Point
        NANs:
      </p>
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