7 Feature test macros (Informative) [feature.test]

These macros allow users to determine which version of this document is supported by the headers defined by the specification. All headers in this document shall define the __cpp_lib_experimental_net feature test macro in Table [tab:info.features].

If an implementation supplies all of the conditionally-supported features specified in [conformance.conditional], all headers in this document shall additionally define the __cpp_lib_experimental_net_extensible feature test macro.

Table 1 — Feature-test macro(s)
Macro nameValue
__cpp_lib_experimental_net 201803
__cpp_lib_experimental_net_extensible 201803