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toascii(3) convert a byte to 7-bit ASCII
ctype, digittoint, isalnum, isalpha, isascii, iscntrl, isdigit, isgraph, ishexnumber, isideogram, islower, isnumber, isphonogram, isprint, ispunct, isrune, isspace, isspecial, isupper, isxdigit, toascii, tolower, toupper, isblank(3) character classification functions

TOASCII(3) MidnightBSD 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 midnightbsd-3.1