/sys$common/syshlp/HELPLIB.HLB  —  CRTL  unordered
    Returns the value 1 (TRUE) if either or both of the arguments is
    a NaN. Otherwise, it returns the value 0 (FALSE).

    This function is OpenVMS Alpha and Integrity servers only.

    Format

      #include  <math.h>

      double unordered  (double x, double y);

      float unorderedf  (float x, float y);

      long double unorderedl  (long double x, long double y);
Additional Information: explode extract
Arguments Return Values
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