Comment by aw1621107 2 days ago
According to tokei, the lib/ directory from the reference implementation [0] has 93821 lines of C++ code and 22164 lines of "C Header" (which seems to be a mix of C++ headers, C headers, and headers that are compatible with both C and C++). The tools/ directory adds 16314 lines of C++ code and 1952 lines of "C Header".
So at least if GP was talking about libjxl "100K+" would be more accurate.
It comes from the "intelligence is a form of compression" hypothesis that has been floating around in the ML space. Also, with a good compression algorithm it is a fairly direct measure of entropy, which is quite well correlated with what a developer might consider code size and/or complexity.
>> 100M+ is a bit more than i would expect for an image format. have i not been paying attention
> So at least if GP was talking about libjxl "100K+" would be more accurate.
M can mean thousands and I think it's common to use it used that way in finance and finance-adjacent areas: https://www.chicagomanualofstyle.org/qanda/data/faq/topics/A...:
> A. You’ve identified two commonly used conventions in finance, one derived from Greek and the other from Latin, but neither one is standard.
Starting with the second convention, M is used for amounts in the thousands and MM for amounts in the millions (usually without a space between the number and the abbreviation—e.g., $150M for $150,000 and $150MM for $150 million). This convention overlaps with the conventions for writing roman numerals, according to which a thousand is represented by M (from mille, the Latin word for “thousand”). Any similarity with roman numerals ends there, however, because MM in roman numerals means two thousand, not a thousand thousands, or one million, as in financial contexts...
https://www.accountingcoach.com/blog/what-does-m-and-mm-stan...:
> An expense of $60,000 could be written as $60M. Internet advertisers are familiar with CPM which is the cost per thousand impressions.
> The letter k is also used represent one thousand. For example, an annual salary of $60,000 might appear as $60k instead of $60M.
I assume this is regional... I work in accounting and finance in New Zealand (generally following ordinary Western/Commonwealth standards) and I've never heard of using M for thousands. If I used that I would confuse the hell out of everyone around me.
In some areas M is mille as in the Latin/French/Italian word for thousand, e.g.
One of the best ways to measure code complexity is to zip up the source code. This eliminates a lot of the redundancies and is a more direct measure of entropy/complexity than almost anything else.
By that metric, jpeg-xl is about 4x the size of the jpeg or png codebase.