This is the mail archive of the
`libc-alpha@sourceware.org`
mailing list for the glibc project.

Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|

Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |

Other format: | [Raw text] |

*From*: "Carlos O'Donell" <carlos at redhat dot com>*To*: "H.J. Lu" <hjl dot tools at gmail dot com>, Andrew Senkevich <andrew dot n dot senkevich at gmail dot com>*Cc*: "Joseph S. Myers" <joseph at codesourcery dot com>, libc-alpha <libc-alpha at sourceware dot org>*Date*: Thu, 25 Sep 2014 15:27:49 -0400*Subject*: Re: [RFC] How to add vector math functions to Glibc*Authentication-results*: sourceware.org; auth=none*References*: <CAMXFM3tjquzniXP1weqxSVFJyhXqsf2PHuyrrrmqp7K0ZzORqA at mail dot gmail dot com> <CAMXFM3sGMNX1DEPAMt7qUR4UREF_xUAQjCG1OjBiZH2aoOFiPA at mail dot gmail dot com> <Pine dot LNX dot 4 dot 64 dot 1409181551370 dot 31607 at digraph dot polyomino dot org dot uk> <CAMXFM3tO7MTYCq8-YFZacdbLvR4iAab_n04AuB+rp2Phs4BvQg at mail dot gmail dot com> <Pine dot LNX dot 4 dot 64 dot 1409242011260 dot 7597 at digraph dot polyomino dot org dot uk> <CAMXFM3tqiqUNuSU2KXvAFM-QescX3+6xUO9=z5X0Ac6C9qJ7zg at mail dot gmail dot com> <CAMe9rOq7bZHb8R=opUzSmAMGWjLpX21mR=Sx96cuBph=TTtDXA at mail dot gmail dot com>

On 09/25/2014 11:40 AM, H.J. Lu wrote: > On Thu, Sep 25, 2014 at 8:17 AM, Andrew Senkevich > <andrew.n.senkevich@gmail.com> wrote: >>> If consensus ends up being to have such a library (libmvec or libmvect?), >>> then the installation rules for libm.so as a linker script should go in >>> math/Makefile, not the toplevel Makerules. (I don't know what if any >>> changes might be needed to allow subdirectories to provide libraries as >>> linker scripts.) >> >> There were three options about the place where to add vectorized math functions: >> >> 1. GLIBC (libm) >> 2. GLIBC (additional library) >> 3. GCC >> >> In GLIBC cases build of vectorized functions can be conditional, no >> additional -lmvec required because of libm.so installed as linked >> script in case of vectorized functions available, so it seems not very >> important whether functions located in additional library or in libm. >> > > I don't think they should be in libm since most of applications > won't use those vector functions, which increase libm size > unnecessarily. A separate library is better. I agree. A distinct libmvec.so is best. I see the consensus that #2 is the way forward. Cheers, Carlos.

**Follow-Ups**:**Re: [RFC] How to add vector math functions to Glibc***From:*H.J. Lu

**References**:**[RFC] How to add vector math functions to Glibc***From:*Andrew Senkevich

**Re: [RFC] How to add vector math functions to Glibc***From:*Andrew Senkevich

**Re: [RFC] How to add vector math functions to Glibc***From:*Joseph S. Myers

**Re: [RFC] How to add vector math functions to Glibc***From:*Andrew Senkevich

**Re: [RFC] How to add vector math functions to Glibc***From:*Joseph S. Myers

**Re: [RFC] How to add vector math functions to Glibc***From:*Andrew Senkevich

**Re: [RFC] How to add vector math functions to Glibc***From:*H.J. Lu

Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|

Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |