----- Original Message ----- From: "Jonathan Osuch" <osuchj@avalon.net> To: "Fractint and General Fractals Discussion" <fractint@mailman.xmission.com> Sent: Saturday, May 24, 2003 8:19 PM Subject: Re: [Fractint] Multifractal_1 On Friday 23 May 2003 03:22 pm, Albrecht Niekamp wrote:
The tricky real(p5) input is now easier to handle and the initial routine is more effective. That BUG still was there in the beginning, but when I changed all border inputs to be fractional (secondary inputs), it seemed to be gone. "Gallery" is a zoom into one "neuralgic" spot and renders ok. In the previous frm I had to use "round" functions to get rid of the "artefacts" which fractint adds to the inputs. I think in some rare events these caused a different value of a variable and the consequent errors. Jonathan, does this sound reasonable? Anyway I keep my fingers crossed and will do some more testing.
Obviously, it shouldn't be necessary to use the "round" function. First, try using the startup option debugflag=322, to turn off the optimizations in the parser. I'll have a look at the code in the next day or two. Thanks for this info. Debugflag=322 helps generate the buggy images, but some others dont generate at all, until this command is deactivated. Here is a test: test { ; does not generate if ; debugflag=322 ; Version 2002 Patchlevel 5 reset=2002 type=formula formulafile=mult239.frm formulaname=multifractal ismand=y function=exp/exp/exp passes=t center-mag=-1.84684/-2.22045e-016/1.788803/1/90/-1.23373533611470521e-01\ 4 params=-0.2724234748374889/0.09260841700491348/384.00004/256.1121/2048.0\ 0016/768.000017/768.01536/512.01025/14289.27/0 float=y maxiter=2048 inside=maxiter outside=tdis logmap=3 periodicity=0 rseed=-2436 colors=200000<2>554776998BBACCB<18>iihjjillk<3>ssr<25>BBA998776<2>221000\ 011<24>0bn0cp0er<3>0ky<25>09B089067<2>021000210<24>oiPqjQslR<3>zsW<25>CB\ 6A95874653442220000400<23>o00q00s00<3>z00<30>200 }