Subject: Re: What even happened to <net> and byte swapping?
From: Thiago Macieira (thiago_at_[hidden])
Date: 2021-02-25 13:43:49
On Thursday, 25 February 2021 07:02:18 PST Matthew Woehlke via Std-Discussion
> On 24/02/2021 11.12, Gennaro Prota wrote:
> > I have worked on many applications that needed to handle different
> > endiannesses, but never had to swap bytes around, either in C++ or in
> > C#.
> So, let's say you have an image file that is big-endian encoded on a
> little-endian system. You need to know the dimensions. How do you get
> those as numbers the CPU can actually use? Do you just read everything a
> byte at a time?
The way I read Gennaro's answer is that "byte swapping" is not the operation
most people want. Dealing with endianness is. One doesn't want to have to care
about whether they need to swap or not.
For that reason, I don't think P1272 is the right answer.
What we need is the four functions in the matrix:
to X X
from X X
Like I did for Qt: https://doc.qt.io/qt-6/qtendian.html#functions
PS: looks like the documentation for the overloads for memory regions is
-- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel DPG Cloud Engineering
STD-DISCUSSION list run by email@example.com
Older Archives on Google Groups