Path: csiph.com!eternal-september.org!feeder.eternal-september.org!nntp.eternal-september.org!.POSTED!not-for-mail From: Paul Rubin Newsgroups: comp.lang.forth Subject: Re: Recognizer proposal Date: Sun, 01 Mar 2026 14:17:19 -0800 Organization: A noiseless patient Spider Lines: 17 Message-ID: <87ikbfb3f4.fsf@nightsong.com> References: <2026Feb9.084944@mips.complang.tuwien.ac.at> <87qzq8b07r.fsf@nightsong.com> <87ms0saw09.fsf@nightsong.com> <2026Mar1.085443@mips.complang.tuwien.ac.at> MIME-Version: 1.0 Content-Type: text/plain Injection-Date: Sun, 01 Mar 2026 22:17:25 +0000 (UTC) Injection-Info: dont-email.me; posting-host="165fe225c1bc2c291b3ef3b24566b1eb"; logging-data="668826"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+Wy8rT1aJfDiYd/kNjv6pO" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) Cancel-Lock: sha1:Y/0ChV+WadgMLkixVWe/OxsM2zs= sha1:oJKhLwg00ZsK4GpXTOfRM4XI9CM= Xref: csiph.com comp.lang.forth:134635 anton@mips.complang.tuwien.ac.at (Anton Ertl) writes: > author = {M. Anton Ertl}, > title = {Multi-precision integer arithmetics}, This paper and the linked one about adding carry bits to the RISC-V machine registers are interesting. Someone recently mentioned that the RISC-V vector extension has ADC so it might be worth evaluating that in future versions of the paper. IDK if it's in the spirit of Forth to have anything like _Bitint() and I'm surprised to hear about it in C (I didn't know about it before). I doubt it but your judgment is better than mine on such questions. I think variable sized bignum arithmetic like 4096 bits is fading out of public key cryptography these days, as algorithms like RSA are being replaced by elliptic curve algorithms with fixed key sizes, typically 256 bits.