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- Newsgroups: gnu.g++.lib.bug
- Path: sparky!uunet!cs.utexas.edu!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!uropax.contrib.de!thomax
- From: thomax@uropax.contrib.de (Thomas Kaulmann)
- Subject: problems with g++-2.3.1, libg++-2.2, vax-ultrix
- Message-ID: <1992Nov22.123804.19791@uropax.contrib.de>
- Sender: gnulists@ai.mit.edu
- Organization: Contributed Software GbR
- Distribution: gnu
- Date: Sun, 22 Nov 1992 12:38:04 GMT
- Approved: bug-lib-g++@prep.ai.mit.edu
- Lines: 162
-
- hello,
-
- i've a problem in the libg++-2.2 test suite (rationals test) -
- the problem occurs only on vax-ultrix. i've no probs with the stuff
- on sunos, dec-ultix or ISC3.0..
- the rest of the test works well, here are the results of the
- tRational.cc test:
-
- EXCEPT:
- ==========================================================================
- one = 1
- third = 1/3
- half = 1/2
- third + half = 5/6
- third - half = -1/6
- third * half = 1/6
- third / half = 2/3
- onePointTwo = 5404319552844595/4503599627370496
- double(onePointTwo) = 1.2
- a = 1
- a += half = 3/2
- a -= half = 1
- a *= half = 1/2
- a /= half = 1
- approxpi = 355/113
- double(approxpi) = 3.14159
- rpi = Rational(PI) = 884279719003555/281474976710656
- double(rpi) = 3.14159
- approxpi + rpi = 199847224979684595/31806672368304128
- approxpi - rpi = 8484881165/31806672368304128
- approxpi * rpi = 313919300246262025/31806672368304128
- approxpi / rpi = 19984723346456576/19984721649480343
- -approxpi = -355/113
- abs(negapproxpi) = 355/113
-
- enter a Rational in form a/b or a: number = 61727839/49382716
- approximating e as pow(1+1/n),n) for n =10
- double(approxe) = 2.59374
- log(approxe) = 0.953102
- approxe = 25937424601/10000000000
- approximating e as pow(1+1/n),n) for n =100
- double(approxe) = 2.70481
- log(approxe) = 0.995033
- approxe = 2704813829421526093267194710807530833677938382781002776890201049117101
- 51430673927943945601434674459097335651375483564268312519281766832427980496322329
- 650055217977882315938008175933291885667484249510001/1000000000000000000000000000
- 00000000000000000000000000000000000000000000000000000000000000000000000000000000
- 00000000000000000000000000000000000000000000000000000000000000000000000000000000
- 0000000000000
- approximating e as pow(1+1/n),n) for n =1000
- double(approxe) = 2.71692
- log(approxe) = 0.9995
- approxe = 2716923932235892457383088121947577188964315018836572803722354774868894
- 94552376815899788569729866142905342103401540625692485946118761765388945775359308
- 33863995720635385004326501761444880461710448441218054796076480866070187420777983
- 75087855857012278053105042704758822511824867218226931719410407150364389665913091
- 82257681907228183573536578620217616722868619815846072464105240750630582621115696
- 47230644412959694982219192514792117009419351147555319726773601575614851442377868
- 16579422141378066423317811515462669946309306263409027388915931082226854264858661
- 42087827998353442412867246120635684746382136463050435966517157363539734603727475
- 24103681748774339412345431535111004716514728691160685284789769166005853834971801
- 72395573924789047989563714318957536493108041591460911612078698461739084741934442
- 44870141657548326389152909515801323311564853415408600931219048916854602439883424
- 38471351024116619960201295579214446663436410391379068075913427424642009919337227
- 91531063202677650581946360422!
- 027765645970182463780273161113009
-
- End of test
-
-
- OUTPUT:
- ==========================================================================
- one = 1
- third = 1/3
- half = 1/2
- third + half = 5/6
- third - half = -1/6
- third * half = 1/6
- third / half = 2/3
- onePointTwo = 21617278211378381/18014398509481984
- double(onePointTwo) = 1.2
- a = 1
- a += half = 3/2
- a -= half = 1
- a *= half = 1/2
- a /= half = 1
- approxpi = 355/113
- double(approxpi) = 3.14159
- rpi = Rational(PI) = 28296951008113761/9007199254740992
- double(rpi) = 3.14159
- approxpi + rpi = 6395111199349907153/1017813515785732096
- approxpi - rpi = 271516197167/1017813515785732096
- approxpi * rpi = 10045417607880385155/1017813515785732096
- approxpi / rpi = 3197555735433052160/3197555463916854993
- -approxpi = -355/113
- abs(negapproxpi) = 355/113
-
- enter a Rational in form a/b or a: number = 61727839/49382716
- approximating e as pow(1+1/n),n) for n =10
- double(approxe) = 2.59374
- log(approxe) = 0.953102
- approxe = 25937424601/10000000000
- approximating e as pow(1+1/n),n) for n =100
- double(approxe) = 2.70481
- log(approxe) = 0.995033
- approxe = 2704813829421526093267194710807530833677938382781002776890201049117101
- 51430673927943945601434674459097335651375483564268312519281766832427980496322329
- 650055217977882315938008175933291885667484249510001/1000000000000000000000000000
- 00000000000000000000000000000000000000000000000000000000000000000000000000000000
- 00000000000000000000000000000000000000000000000000000000000000000000000000000000
- 0000000000000
- approximating e as pow(1+1/n),n) for n =1000
- double(approxe) = 2.71692
- log(approxe) = 0.9995
- approxe = 2716923932235892457383088121947577188964315018836572803722354774868894
- 94552376815899788569729866142905342103401540625692485946118761765388945775359308
- 33863995720635385004326501761444880461710448441218054796076480866070187420777983
- 75087855857012278053105042704758822511824867218226931719410407150364389665913091
- 82257681907228183573536578620217616722868619815846072464105240750630582621115696
- 47230644412959694982219192514792117009419351147555319726773601575614851442377868
- 16579422141378066423317811515462669946309306263409027388915931082226854264858661
- 42087827998353442412867246120635684746382136463050435966517157363539734603727475
- 24103681748774339412345431535111004716514728691160685284789769166005853834971801
- 72395573924789047989563714318957536493108041591460911612078698461739084741934442
- 44870141657548326389152909515801323311564853415408600931219048916854602439883424
- 38471351024116619960201295579214446663436410391379068075913427424642009919337227
- 91531063202677650581946360422!
- 027765645970182463780273161113009
-
- End of test
-
- DIFFERENCE
- ==========================================================================
- 8c8
- < onePointTwo = 5404319552844595/4503599627370496
- ---
- > onePointTwo = 21617278211378381/18014398509481984
- 17c17
- < rpi = Rational(PI) = 884279719003555/281474976710656
- ---
- > rpi = Rational(PI) = 28296951008113761/9007199254740992
- 19,22c19,22
- < approxpi + rpi = 199847224979684595/31806672368304128
- < approxpi - rpi = 8484881165/31806672368304128
- < approxpi * rpi = 313919300246262025/31806672368304128
- < approxpi / rpi = 19984723346456576/19984721649480343
- ---
- > approxpi + rpi = 6395111199349907153/1017813515785732096
- > approxpi - rpi = 271516197167/1017813515785732096
- > approxpi * rpi = 10045417607880385155/1017813515785732096
- > approxpi / rpi = 3197555735433052160/3197555463916854993
-
-
- what is the error and how can i solve it??
-
-
- thomax
- --
- Contributed Software, Thomas Kaulmann, Graefestr. 42, 1000 Berlin 61
- G N U & N E T W O R K S & U N I X Tel. : +49 30 694 69 07
- Mail: thomax@contrib.de Modem: +49 30 694 (6182|6749|6809)
-
-