[FFmpeg-devel] [PATCH] [libavutil] Add saturated add/sub operations for int64_t.

[Carl Eugen Hoyos]

Am Fr., 1. Mai 2020 um 01:31 Uhr schrieb James Almer <jamrial at gmail.com>:
>
> On 4/30/2020 8:20 PM, Carl Eugen Hoyos wrote:
> > Am Fr., 1. Mai 2020 um 00:20 Uhr schrieb Dale Curtis <dalecurtis at chromium.org>:
> >>
> >> Many places are using their own custom code for handling overflow
> >> around timestamps or other int64_t values. There are enough of these
> >> now that having some common saturated math functions seems sound.
> >
> >> This adds implementations that just use the builtin functions for
> >> recent gcc, clang when available or implements its own version for
> >> older compilers.
> >
> > Should be tested in configure and I believe this should be a separate patch.
>
> Not really, the AV_GCC_VERSION_AT_LEAST helper macro exists precisely
> for this purpose.

The macro exists to avoid separate patches?

Carl Eugen