strxfrm —
transform a string under locale
Standard C Library (libc, -lc)
#include <string.h>
size_t
  
  strxfrm(char
    * restrict dst, const
    char * restrict src,
    size_t n);
The strxfrm() function does something horrible. The idea
  is to “un-localize” a string: the function transforms
  src, storing the result in dst,
  such that strcmp(3) on
  transformed strings returns what
  strcoll(3) on the original
  untransformed strings would return.
The strxfrm() function conforms to ANSI
  X3.159-1989 (“ANSI C89”).
Since locales are not fully implemented on NetBSD,
  strxfrm() just returns a copy of the original string.