iswctype
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | Defined in header  <wctype.h> | ||
| int iswctype( wint_t ch, wctype_t desc ); | ||
Classifies the wide character wc using the current C locale's LC_CTYPE category identified by desc.
[edit] Parameters
| ch | - | the wide character to classify | 
| desc | - | the LC_CTYPE category, obtained from a call to wctype | 
[edit] Return value
Non-zero if the character ch has the property identified by desc in LC_CTYPE facet of the current C locale.
[edit] See also
| looks up a character classification category in the current C locale (function) | 


