On 9/20/16, Scott Hess <sh...@google.com> wrote:
> I also see that some systems
> include __builtin_mul_overflow() intrinsics, which can use the CPU's
> overflow flag, if available, which seems plausible.
>
I too have seen this, and look forward to the wide-spread availability
of these routines. The functions are not available on my 4.8.4 GCC,
nor on MSVC 2012 (afaik).
Other intrinsic functions are used in SQLite. For example:
https://www.sqlite.org/src/artifact/3e2da61018?ln=1135-1157
Intrinsic functions can make a big difference in performance.
--
D. Richard Hipp
d...@sqlite.org
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