Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Thomas Koenig Newsgroups: comp.arch Subject: Re: Misc: Applications of small floating point formats. Date: Fri, 2 Aug 2024 05:53:48 -0000 (UTC) Organization: A noiseless patient Spider Lines: 10 Message-ID: References: <61e1f6f5f04ad043966b326d99e38928@www.novabbs.org> Injection-Date: Fri, 02 Aug 2024 07:53:48 +0200 (CEST) Injection-Info: dont-email.me; posting-host="98d05242c0474e13c57933cb25bdbf2b"; logging-data="2821482"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+tQB+jFJY+EvOkCttygxsnJ+5QpEerLYI=" User-Agent: slrn/1.0.3 (Linux) Cancel-Lock: sha1:KmOKbX2GIkTyeASdOVeEWavwfN8= Bytes: 1379 EricP schrieb: > With FP128 will there again be a significant difference in speed to > FP62 or FP32 (including transcendentals)? Seems there would be because not > every HW implementation is going to implement a full width multiplier. The only major architecture I'm aware of that uses FP128, POWER, chose to use their decimal FP unit do do it on the side. This makes multiplication _really_ slow, unfortunately.