Changes v1->v2:
* Use __[u]int128_t as per Blue's comment. I'd actually forgotten
that gcc automatically addeds those typedefs.
* Keep the internal mul64 routine, but mark it inline. The v1
patch relied in gcc's pre-c99 inlining semantics. The v2 patch
ought to compile in strict c99 mode.
* Add unit tests, as per Andreas' comment.
Tested on x86_64, i686, and arm hosts.
r~
Richard Henderson (3):
host-utils: Use __int128_t for mul[us]64
host-utils: Improve mulu64 and muls64
tests: Add unit tests for mulu64 and muls64
configure | 20 ++++++++++
include/qemu/host-utils.h | 17 ++++-----
tests/Makefile | 7 +++-
tests/test-mul64.c | 69 ++++++++++++++++++++++++++++++++++
util/host-utils.c | 96 ++++++++++++++++++++---------------------------
5 files changed, 143 insertions(+), 66 deletions(-)
create mode 100644 tests/test-mul64.c
--
1.7.11.7
