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From: SourceForge.net <noreply@so...>  20030528 17:03:01

Bugs item #727542, was opened at 20030425 11:35 Message generated for change (Comment added) made by rtoy You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=727542&group_id=4933 Category: None Group: None >Status: Closed Resolution: Fixed Priority: 5 Submitted By: Martin Rubey (kratt5) Assigned to: Nobody/Anonymous (nobody) Summary: powerseries wrong/fix Initial Comment: (C51) gf:2*(1751144*x4882*x^3+4324*x^42072*x^5+416*x^6+3189*x^2)/ (2*x1)^3/(4*x1)/(x1)^3$ (C52) taylor(gf,x,0,3); 2 3 (D52)/T/ 350 + 2262 x + 11634 x + 53650 x + . . . (C53) taylor(powerseries(gf,x,0),x,0,3); 2 3 (D53)/T/ 470 + 2862 x + 13524 x + 58750 x + . . . maybe this is related to sum(x^i,i,0,inf),x:0 giving 0, but I don't know... I checked D53 with Maple, so it seems that powerseries is wrong, not taylor. I converted the result of powerseries to the rational function again, and obtained: 2*(9407436*x41588*x^322066*x^5+40253*x^4+416*x^81816*x^7+7076*x^6+24227*x^2) /(2*x1)^3/(4*x1)/(x2)^2/(x1)^3 The difference between the two is 160*'SUM((I+1)*2^I*x^I,I,0,INF)160*'SUM((I+1)*2^(I2)*x^I,I,0,INF) so the reason might be a simple typo ( instead of + or the like)... Should be possible to correct this... Martin  >Comment By: Raymond Toy (rtoy) Date: 20030528 13:03 Message: Logged In: YES user_id=28849 Patch applied.  Comment By: Martin Rubey (kratt5) Date: 20030430 13:35 Message: Logged In: YES user_id=651552 Here is the fix. It's a typo, as I expected... should really be applied as soon as possible since it gets everything wrong, where the partial fraction expansion contains (a*x+c)^(2)... Martin diff c series.lisp series.lisp.~1.1.1.1.~ *** series.lisp Wed Apr 30 19:32:58 2003  series.lisp.~1.1.1.1.~ Mon May 8 08:09:41 2000 *************** *** 248,255 **** 0)) ((= 2 n) (psp2form (m* (m+ 1 *index) ! (m^ a (m* 1 (m+ 2 *index))) ;; kratt5 ! (m^ (m* 1 c) *index)) ;; kratt5 (if (equal m 1) *index (m* *index m)) 0)) (t (psp2form (m* (do ((nn (f1 n) (f1 nn))  248,255  0)) ((= 2 n) (psp2form (m* (m+ 1 *index) ! (m^ c (m* 1 (m+ 2 *index))) ! (m^ (m* 1 a) *index)) (if (equal m 1) *index (m* *index m)) 0)) (t (psp2form (m* (do ((nn (f1 n) (f1 nn))  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=727542&group_id=4933 
From: SourceForge.net <noreply@so...>  20030528 16:41:10

Bugs item #738848, was opened at 20030516 12:15 Message generated for change (Comment added) made by rtoy You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=738848&group_id=4933 Category: Share Libraries Group: Fix for 5.9.0 >Status: Closed >Resolution: Duplicate Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: Poverseries error for 1/(1t)^2 Initial Comment: It seems powerseries(1(ab*t)^n, t, 0) produces an error for n=2, but is correct for n=1,3,4: (C1) POWERSERIES(1/(ab*t)^2, t, 0); INF ==== \ I1  I1  2 I1 (D1) > a b (I1 + 1) t / ==== I1 = 0 [I believe that powers of a and b above have opposite signs].  >Comment By: Raymond Toy (rtoy) Date: 20030528 12:41 Message: Logged In: YES user_id=28849 Bug marked as duplicate. I'll apply your patch for bug 727542.  Comment By: Martin Rubey (kratt5) Date: 20030519 04:32 Message: Logged In: YES user_id=651552 This is fixed with the fix for [727542] powerseries wrong/fix Martin (please, somebody merge it into cvs, it is IMPORTANT!)  Comment By: Nobody/Anonymous (nobody) Date: 20030517 14:32 Message: Logged In: NO (C1) verbose:true; (D1) TRUE (C2) POWERSERIES(1/(ab*t)^2, t, 0); In the first simplification we have returned: 1  2 2 2 b t  2 a b t + a trying to do a rational function expansion of 1  2 2 2 b t  2 a b t + a Using a special rule for expressions of form M  N (A + C VAR ) Here we have [N = 2, A =  a, C = b, M = 1] INF ==== \ I1  I1  2 I1 (D2) > a b (I1 + 1) t / ==== I1 = 0 (C3)  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=738848&group_id=4933 
From: SourceForge.net <noreply@so...>  20030528 16:33:06

Bugs item #744679, was opened at 20030527 22:30 Message generated for change (Comment added) made by rtoy You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=744679&group_id=4933 Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Stavros Macrakis (macrakis) Assigned to: Nobody/Anonymous (nobody) Summary: limit overflows memory? Initial Comment: expr: (x^(1/n)+1)^n/2^n; limit(expr,n,inf); Is x positive or negative? pos;Is x  1 positive or negative? pos; Error: Contiguous blocks exhausted. Currently, 129 pages are allocated. Use ALLOCATECONTIGUOUSPAGES to expand the space. Fast links are on: do (si::usefastlinks nil) for debugging Error signalled by MACSYMATOPLEVEL. Broken at HAIPART. Type :H for Help.  a) Of course it shouldn't cause this sort of error at all. b) What is allocatecontiguouspages??? There is apparently no such function in gcl. By the way, tlimit gets the correct result, sqrt(x). Maxima 5.9.0 GCL 2.5.0 mingw32 Windows 2000 Athlon  >Comment By: Raymond Toy (rtoy) Date: 20030528 12:33 Message: Logged In: YES user_id=28849 With CMUCL, we also get an error. It seems we're trying to compute 2^16384, and CMUCL stops if the exponent is too large. Presumably gcl is trying to compute the same thing and has run out of memory for this number.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=744679&group_id=4933 
From: SourceForge.net <noreply@so...>  20030528 02:30:46

Bugs item #744679, was opened at 20030527 22:30 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=744679&group_id=4933 Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Stavros Macrakis (macrakis) Assigned to: Nobody/Anonymous (nobody) Summary: limit overflows memory? Initial Comment: expr: (x^(1/n)+1)^n/2^n; limit(expr,n,inf); Is x positive or negative? pos;Is x  1 positive or negative? pos; Error: Contiguous blocks exhausted. Currently, 129 pages are allocated. Use ALLOCATECONTIGUOUSPAGES to expand the space. Fast links are on: do (si::usefastlinks nil) for debugging Error signalled by MACSYMATOPLEVEL. Broken at HAIPART. Type :H for Help.  a) Of course it shouldn't cause this sort of error at all. b) What is allocatecontiguouspages??? There is apparently no such function in gcl. By the way, tlimit gets the correct result, sqrt(x). Maxima 5.9.0 GCL 2.5.0 mingw32 Windows 2000 Athlon  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=744679&group_id=4933 