This header is part of the language support library.
This header supplies implementation-dependent information about the standard library (such as implementation-specific library version macros).
<version> also defines all library feature-test macros.
Prior to C++20, including
<ciso646> is sometimes used for this purpose.
|Library feature-test macros|| defined in the header
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.