[header][C library] ciso646 (iso646.h)

*[header][C library] ciso646 (iso646.h)

<ciso646> (iso646.h)

ISO 646 Alternative operator spellings

This header defines eleven macro constants with alternative spellings for those C++ operators not supported by the ISO646 standard character set:

macro	operator
and	&&
and_eq	&=
bitand	&
bitor	|
compl	~
not	!
not_eq	!=
or	||
or_eq	|=
xor	^
xor_eq	^=

In C++, reserved words exist with the same names as these macros and are treated as aliases of their respective operator. Therefore the inclusion of this header has no effect in C++, and is not necessary in order to use the alternative names.

내용 출처 : http://www.cplusplus.com/reference/ciso646/