'\" t .\" Copyright (c) 1995 by Jim Van Zandt .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" .\" Added BUGS section, aeb, 950919 .\" .TH toascii 3 2023-07-20 "Linux man-pages 6.05.01" .SH NAME toascii \- convert character to ASCII .SH LIBRARY Standard C library .RI ( libc ", " \-lc ) .SH SYNOPSIS .nf .B #include .PP .BI "[[deprecated]] int toascii(int " c ); .fi .PP .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE .PP .BR toascii (): .nf _XOPEN_SOURCE || /* glibc >= 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE .fi .SH DESCRIPTION .BR toascii () converts .I c to a 7-bit .I "unsigned char" value that fits into the ASCII character set, by clearing the high-order bits. .SH RETURN VALUE The value returned is that of the converted character. .SH ATTRIBUTES For an explanation of the terms used in this section, see .BR attributes (7). .TS allbox; lbx lb lb l l l. Interface Attribute Value T{ .na .nh .BR toascii () T} Thread safety MT-Safe .TE .sp 1 .SH STANDARDS POSIX.1-2008. .SH HISTORY SVr4, BSD, POSIX.1-2001. Obsolete in POSIX.1-2008, noting that it cannot be used portably in a localized application. .SH BUGS Many people will be unhappy if you use this function. This function will convert accented letters into random characters. .SH SEE ALSO .BR isascii (3), .BR tolower (3), .BR toupper (3)