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toascii
[force integers to ASCII range]

SYNOPSIS
#include <ctype.h>
int toascii(int c);

DESCRIPTION
toascii is a macro which coerces integers to the ASCII range (0–127) by zeroing any higher-order bits.

You can use a compiled subroutine instead of the macro definition by undefining this macro, using #undef toascii.

RETURNS
toascii returns integers between 0 and 127.

COMPLIANCE
toascii is not ANSI C.

No supporting OS subroutines are required.