Rob and all, I am the gdh that Christopher Graff was referring to here: http://lists.landley.net/pipermail/toybox-landley.net/2018-March/009413.html. I have a few notes.
First, Graff's library was incompatible with the POSIX bc spec in subtle ways, and I was getting frustrated trying to work with him. So on a day that I was frustrated, I attempted to write an implementation to parse, print, and add. After discovering that I could do it, I wrote my own. Second, by the time you had sent me the link to the library, I had already completed my own. Also, POSIX requires decimal, while that library is for binary. The rounding modes are also incompatible. That's why I cannot use it. Third, in the middle of your message to Graff, you said that, because it's so big, you would change my submission to be unrecognizable before accepting it. I understand that it's big, but please consider the fact that I implemented a complete programming language and virtual machine in 9000 lines of code. And I did it with comprehensive error checking. Asking for much less is (in my opinion) not entirely fair. Now, there are some blank lines that I could reduce. (For example, I could remove blank lines between function calls and the line that checks for errors.) However, I have been very careful to not put in any more functional loc than was absolutely required. A big portion of what was required was to implement GNU extensions, the vast majority of which are required for the timeconst.bc script in the Linux kernel. If you would still like to change my submission, please work with me to do so. I am entirely willing to do so (I have already written the bc in toybox style and will continue to improve it if possible). If you do, I can maintain into the future because I already have a script to cut releases of bc for toybox. If you do not work with me, and change it yourself, it would very difficult for me to maintain it for you. I look forward to working with you. Gavin Howard
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