src/include/endian.h, branch main

endian.h: Update comments now that POSIX Issue 8 is POSIX.1-2024

2024-12-30T20:38:39Z

Now that Issue 8 has been published, replace the informal Issue 8 language with the more typical POSIX.1-xxxx citation. Sponsored by: Netflix

endian.h: Define uint{16,32,64}_t

2024-05-06T16:43:14Z

The Draft Posix Issue 8 standard requires that these be defined. Define them in the usual way that lets multiple headers define them. Opted to not just use #include , allowed by the draft, to be conservative. Add notes about how we comply with Issue 8, and that we've opted to define these only as macros, though the standard allows functions, macros or both. Sponsored by: Netflix

endian.h: Remove duplicate words

2023-12-10T17:40:57Z

Reviewed by: emaste Pull Request: https://github.com/freebsd/freebsd-src/pull/920

linux: For better compatibility, provide compatible endian.h

2023-01-20T23:32:45Z

Add endian.h. This includes sys/endian.h and then adds extra defines that glibc defines with double underscores for our _{BIG,BYTE,LITTLE,PDP}_ENDIAN macros. We also define __FLOAT_WORD_ORDER to be the same as _BYTE_ENDIAN since FreeBSD doesn't currently define this, and the default with glibc is exactly this for our platforms. Move common parts of endian.h and sys/endian.h into sys/_endian.h to limit namespace pollution from endian.h All this gives us good compatibility with Linux. There may be one or two upstreams that haven't integrated the patches I tried to send up. There are some minor differences: o The extra glibc macros are not defined. These are all controlled with either __ at the start, or only defined when glibc is being built. We also don't define macros that are used internally in glibc that would pollute the namespace. o For complete compatibility, this change must also be paired with providing a glibc-compatible byteswap.h. Sponsored by: Netflix Reviewed by: mhorne, markj, jhb Differential Revision: https://reviews.freebsd.org/D31962