Library /sys$common/syshlp/helplib.hlb  —  CRTL  decc$validate_wchar
    Confirms that its argument is a valid wide character in the
    current program's locale.

    Format

      #include  <unistd.h>

      int decc$validate_wchar  (wchar_t wc);
Additional Information: explode extract
Argument Description Return Values
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