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3.21 iswgraph, iswgraph_l—graphic wide character test

Synopsis 

     #include <wctype.h>
     int iswgraph(wint_t c);
     
     #include <wctype.h>
     int iswgraph_l(wint_t c, locale_t locale);

Description
iswgraph is a function which classifies wide-character values that are graphic.

iswgraph_l is like iswgraph but performs the check based on the locale specified by the locale object locale. If locale is LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
Returns
iswgraph, iswgraph_l return non-zero if c is a graphic wide character.
Portability
iswgraph is C99. iswgraph_l is POSIX-1.2008.

No supporting OS subroutines are required.