Date: Mon, 31 Dec 2018 07:22:30 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Pedro Giffuni <pfg@freebsd.org> Cc: freebsd-numerics@freebsd.org Subject: Re: New math library from ARM Message-ID: <20181231152230.GC823@troutmask.apl.washington.edu> In-Reply-To: <20181231151904.GB823@troutmask.apl.washington.edu> References: <797a7755-db93-1b9c-f3b9-8850d948e098@FreeBSD.org> <20181231151904.GB823@troutmask.apl.washington.edu>
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On Mon, Dec 31, 2018 at 07:19:04AM -0800, Steve Kargl wrote: > On Mon, Dec 31, 2018 at 10:06:57AM -0500, Pedro Giffuni wrote: > > Hi; > > > > Just noted a recent initiative from musl-libc: > > > > https://www.openwall.com/lists/musl/2018/12/08/1 > > > > It appears they plan to replace their (FreeBSD) math code with a new ARM > > implementation: > > > > https://github.com/ARM-software/optimized-routines > > > > The Copyright on this code is unclear. For example, in > single/e_rem_pio2.c lines 1-6: > > /* > * e_rem_pio2.c > * > * Copyright (c) 1999-2018, Arm Limited. > * SPDX-License-Identifier: MIT > */ > > Then lines 16-18: > > /* > * Simple cases: all nicked from the fdlibm version for speed. > */ > > The original fdlibm licenses applies ot the nicked lines. > There is also some interesting uses of float literal constants with 80 digits when at most 9 are relevant. -- Steve
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