euc.h, euc - euc macros
#include <euc.h>
The <euc.h> header provides macros for flag of multibyte, the number of bytes excluding the single-shift characters SS2 and SS3 for codesets 2 and 3, and the number of columns needed to represent a character of the given Extended UNIX Code (EUC) code set 1, 2, 3.
multibyte
eucw1
eucw2
eucw3
scrw1
scrw2
scrw3
If __XPG7_THREAD_MODEL__ is defined before including <euc.h>, these macros are fully MT-Safe without any exceptions.
See attributes(7) for descriptions of the following attributes:
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cset(3C), euclen(3C), getwidth(3C), setlocale(3C), attributes(7)