[cfe-dev] C runtimes with PowerPC support for IBM long double?
ardi via cfe-dev
cfe-dev at lists.llvm.org
Tue Dec 5 13:02:10 PST 2017
I have some old C code written for PowerPC long double (IBM
double+double). I believe that clang supports generating IBM long
double code for ppc targets (correct me if I'm wrong), but I'd like to
know what C runtimes I could use together with clang in order to get
this floating point format working.
What I know for the moment:
- The Apple libc of course supports the IBM long double (at least in
versions older than when they removed ppc support).
- Linux seems to support it too in glibc (didn't test it myself,
though, so not 100% sure).
- The musl library won't support that format, by design decision (they
will only support standard formats).
- The support for long double in NetBSD seems quite recent (added in
7.0 in preliminary status, if I'm reading the relnotes correctly, so I
don't think IBM long double is supported at this point).
- No idea about OpenBSD nor FreeBSD (couldn't find any docs referring
to this, only the gcc manpage, but it's a manpage written by the gcc
authors, so it doesn't cover the support in the C runtime of the OS).
So, the only one that I know for sure supports this format is the
Apple libc. If you know of more alternatives, please tell, as I'd like
to continue working with this code.
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