toascii, toascii_l—force integers to ASCII rangeSynopsis
#include <ctype.h> int toascii(int c); #include <ctype.h> int toascii_l(int c, locale_t locale);
Description
toascii is a macro which coerces integers to the ASCII range (0–127) by zeroing any higher-order bits.
toascii_l is like toascii but performs the function based on the
locale specified by the locale object locale. If locale is
LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
You can use a compiled subroutine instead of the macro definition by
undefining this macro using ‘#undef toascii’ or ‘#undef toascii_l’.
Returns
toascii, toascii_l return integers between 0 and 127.
Portability
toascii is X/Open, BSD and POSIX-1.2001, but marked obsolete in
POSIX-1.2008.
toascii_l is a GNU extension.
No supporting OS subroutines are required.