Comment by nickcw
13 hours ago
The fixed size int types int32_t and friends weren't introduced until C99. Microsoft held out until 2013 before it put <inttypes.h> into Visual Studio!
So there has been a really long time in C's evolution where we haven't had fixed size types which has been a super annoying mess of #ifdefs in portable code.
The variable size ints have allowed some super weird architectures though. I remember looking at the datasheet for the Motorola 56000 DSP and noting that the C compiler set char = short = int = 24 bits! That was because the hardware could not address anything smaller than 24 bits. I think long could be 48 bits.
The product is named Visual C++, that it happened to do C was always kind of a sideshow as far as I could tell. Aside from that, I seem to recall that VC++ had the WORD, DWORD, and eventually QWORD macros to specify unsigned 16, 32 and 64 bit types respectively.
And their names are so frustrating. We don't run 16 bit systems any more. Word is a word that means something and I don't care what a word was on the 8086. The only honest things the WORD macro could expand to are size_t and ssize_t. 64bit is not a quad word, it's just a word.
Prior to Visual C++ (the first version of which shipped for Windows 3.x), Microsoft sold a “Microsoft C/C++” as well as Microsoft QuickC:
- https://winworldpc.com/product/microsoft-c-c/5x
- https://winworldpc.com/product/quick-c/10-for-windows
I always just defined these types in a per-platform portability header myself.