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std::iswlower(3)	       C++ Standard Libary		std::iswlower(3)

NAME
     std::iswlower - std::iswlower

Synopsis
	Defined in header <cwctype>
	int iswlower( std::wint_t ch );

	Checks if the given wide character is a lowercase letter, i.e. one of
	abcdefghijklmnopqrstuvwxyz  or any lowercase letter specific to the cur-
     rent locale.

	If the value of ch is neither representable as a wchar_t  nor  equal  to
     the value of
	the macro WEOF, the behavior is undefined.

Parameters
	ch - wide character

Return value
	Non-zero  value if the wide character is a lowercase letter, zero other-
     wise.

Notes
	ISO 30112 specifies which Unicode characters are include in POSIX  lower
     category.

Example
     // Run this code

      #include <clocale>
      #include <cwctype>
      #include <iostream>

      int main()
      {
	  wchar_t c = L'\u0444'; // Cyrillic small letter ef ('N')

	  std::cout << std::hex << std::showbase << std::boolalpha
		    << "in the default locale, iswlower("
		    << static_cast<std::wint_t>(c) << ") = "
		    << static_cast<bool>(std::iswlower(c)) << '\n';

	  std::setlocale(LC_ALL, "en_US.utf8");
	  std::cout << "in Unicode locale, iswlower("
		    << static_cast<std::wint_t>(c) << ") = "
		    << static_cast<bool>(std::iswlower(c)) << '\n';
      }

Output:
      in the default locale, iswlower(0x444) = false
      in Unicode locale, iswlower(0x444) = true

See also
	islower(std::locale) checks if a character is classified as lowercase by
     a locale
			     (function template)
	islower 	     checks if a character is lowercase
			     (function)
	C documentation for
	iswlower

	     ASCII  values	       characters     iscntrl	isprint  isspace
     isblank  isgraph  ispunct	 isalnum   isalpha   isupper   islower	 isdigit
     isxdigit  decimal	hexadecimal    octal		       iswcntrl iswprint
     iswspace iswblank iswgraph iswpunct  iswalnum  iswalpha  iswupper	iswlower
     iswdigit  iswxdigit  0a8	   \x0a\x8	\0a\10	   control  codes    a 0
     0	      0        0	0	 0	  0	   0	     0	       0
     0	      0
				   (NUL,    etc.)    9	       \x9	     \11
     tab (\t)	     a 0       0	a 0	  a 0	    0	     0	       0
     0	      0        0	0	 0
				   whitespaces	 10a13	   \xAa\xD	 \12a\15
     (\n, \v, \f,    a 0       0	a 0	  0	   0	     0	       0
     0	      0        0	0	 0
				   \r)	14a31	 \xEa\x1F     \16a\37	 control
     codes   a 0       0	0	 0	  0	   0	     0	       0
     0		0	   0	      0   32	   \x20 	\40	   space
     0	      a 0	 a  0	     a	0	 0	   0	     0	       0
     0	       0	0	 0 33a47   \x21a\x2F   \41a\57	 !"#$%&'()*+,-./
     0	      a 0	 0	   0	     a	0	 a  0	     0	       0
     0	       0	 0	   0  48a57    \x30a\x39    \60a\71   0123456789
     0	      a 0	 0	   0	     a	0	 0	   a  0        0
     0	       0	 a  0	     a	0  58a64   \x3Aa\x40   \72a\100  :;<=>?@
     0	      a 0	 0	   0	     a	0	 a  0	     0	       0
     0		0	   0	      0  65a70	  \x41a\x46    \101a\106  ABCDEF
     0	      a 0	0	 0	  a  0	      0 	a  0	    a  0
     a	0	 0	   0	    a 0 71a90	\x47a\x5A   \107a\132 GHIJKLMNOP
     0	      a 0	0	 0	  a  0	      0 	a  0	    a  0
     a 0       0	0	 0
				   QRSTUVWXYZ	91a96	  \x5Ba\x60    \133a\140
     [\]^_`	     0	      a 0	0	 0	  a 0	    a 0        0
     0	       0	0	 0	  0 97a102  \x61a\x66	\141a\146 abcdef
     0	      a 0	0	 0	  a  0	      0 	a  0	    a  0
     0	       a  0	   0	    a 0 103a122 \x67a\x7A   \147a\172 ghijklmnop
     0	      a 0	0	 0	  a  0	      0 	a  0	    a  0
     0	      a 0	0	 0
				   qrstuvwxyz 123a126 \x7Ba\x7E   \172a\176 {|}~
     0	       a  0	   0	     0	       a  0	   a  0       0        0
     0	       0	 0	   0  127      \x7F	    \177       backspace
     a	0	0	 0	  0	   0	    0	     0	      0        0
     0	      0        0
				   character (DEL)

http://cppreference.com 	   2024.06.10			std::iswlower(3)
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