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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: determines if it is a signed type
Date: Tue, 19 May 2015 08:07:06 -0700
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David Brown <david.brown@hesbynett.no> writes:
[...]
> For embedded systems, most compilers support C99 (at least the relevant
> bits - often things like wide character support are missing).  When
> using compilers that don't have <stdint.h>, people will often make their
> own for the compiler in question (typically an incomplete stdint.h, with
> just the typedefs needed for sized integer types - I doubt if anyone
> bothers with all the macros and range limit defines).
>
> It is also common in embedded systems to have your own sized integer
> types, or use ones defined by your RTOS or other bits of software (which
> can have a history going back to a time when <stdint.h> was less common
> in embedded compilers).  Thus you see code with types like "u32" or
> "sys_uint_32_t", or similar.

Doug Gwyn wrote an implementation of <stdint.h> and several other C99
headers that work with a C90 compiler.

The files are public domain.

http://www.lysator.liu.se/%28nobg%29/c/q8/index.html

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"