The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008, 2016 Edition
Copyright © 2001-2016 The IEEE and The Open Group

#### NAME

> iso646.h - alternative spellings

#### SYNOPSIS

> `#include <iso646.h>`

#### DESCRIPTION

> [CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C standard.

> The <iso646.h> header shall define the following eleven macros (on the left) that expand to the corresponding tokens (on the right):

> and
>   `&&`
> and_eq
>   `&=`
> bitand
>   `&`
> bitor
>   `|`
> compl
>   `˜`
> not
>   `!`
> not_eq
>   `!=`
> or
>   `||`
> or_eq
>   `|=`
> xor
>   `^`
> xor_eq
>   `^=`

The following sections are informative.

#### APPLICATION USAGE

> None.

#### RATIONALE

> None.

#### FUTURE DIRECTIONS

> None.

#### SEE ALSO

> None.

#### CHANGE HISTORY

> First released in Issue 5. Derived from ISO/IEC 9899:1990/Amendment 1:1995 (E).

End of informative text.

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