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TOASCII(3) |
Library Functions Manual |
TOASCII(3) |
NAME
toascii — convert a byte to 7-bit ASCII
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <ctype.h>
int
toascii(int c);
DESCRIPTION
The toascii() function returns the argument with all but the lower 7 bits cleared.
RETURN VALUES
The toascii() function always returns a valid ASCII character. The result is a non-negative integer in the range from 0 to 127, inclusive.
SEE ALSO
ctype(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)
STANDARDS
The toascii() function conforms to X/Open Portability Guide Issue 4 (“XPG4”) and IEEE Std 1003.1-2001 (“POSIX.1”). The IEEE Std 1003.1-2008 (“POSIX.1”) revision however marked it as obsolete, noting that toascii() cannot be used portably in a localized application.