TOASCII(3) Library Functions Manual TOASCII(3)

toasciiconvert a byte to 7-bit ASCII

Standard C Library (libc, -lc)

#include <ctype.h>

int
toascii(int c);

The () function strips all but the low 7 bits from a letter, including parity or other marker bits.

The toascii() function always returns a valid ASCII character.

digittoint(3), isalnum(3), isalpha(3), isascii(3), iscntrl(3), isdigit(3), isgraph(3), islower(3), isprint(3), ispunct(3), isspace(3), isupper(3), isxdigit(3), stdio(3), tolower(3), toupper(3), ascii(7)

June 4, 1993 macOS 15.2