github.com/afumu/libc@v0.0.6/musl/src/ctype/iswupper.c (about)

     1  #include <wctype.h>
     2  
     3  int iswupper(wint_t wc)
     4  {
     5  	return towlower(wc) != wc;
     6  }
     7  
     8  int __iswupper_l(wint_t c, locale_t l)
     9  {
    10  	return iswupper(c);
    11  }
    12  
    13  weak_alias(__iswupper_l, iswupper_l);