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Path: sserve!manuel!munnari.oz.au!uunet!mcsun!Germany.EU.net!bs From: bs@Germany.EU.net (Bernard Steiner) Newsgroups: comp.unix.bsd Subject: Re: 386bsd Xfree Date: 16 Sep 1992 15:02:17 GMT Organization: EUnet Backbone, Dortmund, Germany Lines: 23 Distribution: world Message-ID: <197i9pINNm0n@disaster.Germany.EU.net> References: <1949s2INNrmp@disaster.Germany.EU.net> <JTSILLA.92Sep15125721@damon.ccs.northeastern.edu> NNTP-Posting-Host: walhalla.germany.eu.net In article <JTSILLA.92Sep15125721@damon.ccs.northeastern.edu>, jtsilla@damon.ccs.northeastern.edu (James Tsillas) writes: > There's no need to recompile since the math emulation is done through > software traps when FPU instructions are found. If you have a 486 or a > 387 then you never get an FPU trap and the FPU instruction is handled by > the hardware. Excusez-moi, I beg to differ. Programs compiled with the standard libm.a emulate all the fsqrt,fgsin,fcos and what have you by fmul, fdiv, fadd and fsub. Those are the only instructions emulated by the emulator in the kernel. Re-linking with a math library that actually uses fsin etc would probably improve performance; except when the only stuff actually used by X11 was the four above-mentioned basic instructions. Greetings, Bernard -- Bernard Steiner, FB Informatik/IRB, Uni Dortmund, vox +49 231 755 2444 Postfach 500500, D-W-4600 Dortmund 50, Germany fax +49 231 755 2386 bs@Germany.EU.net ...!uunet!unido!bs *III And they gave it Instructions, but knew it not. } From The Book of Nome, *IV It is, they said, a Box with a Funny Voice. } Mezzanine v.III-IV