@node _toupper @section @code{_toupper} @findex _toupper POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/_toupper.html} Gnulib module: --- Portability problems fixed by Gnulib: @itemize @end itemize Portability problems not fixed by Gnulib: @itemize @item This function is missing on some platforms: Mac OS X 10.5, Minix 3.1.8, Android 4.4. @end itemize