This is some more fallout from #16858. Jeroen, do you already have a followup ticket for numerical noise?
On Saturday, September 27, 2014 9:51:46 PM UTC+1, Justin C. Walker wrote: > > > On Sep 27, 2014, at 07:51 , Volker Braun wrote: > > > As usual, get the updated "develop" git branch. Alternatively, > > self-contained source tarball is here: > > > > http://boxen.math.washington.edu/home/release/sage-6.4.beta4.tar.gz > > Built from the tarball on two OS X systems (10.6.8/Dual 6-core Xeons; > 10.9.5/Quad-core Core i7). Build completed successfully on each. > > On 10.9.5, the tests ('pteestlong') completed w/o problems. > On 10.6.8, there was one glitch, > sage -t --long --warn-long 84.6 > src/sage/rings/polynomial/polynomial_element.pyx > # 3 doctests failed > > The failures are repeatable. > > viz: > > File "src/sage/rings/polynomial/polynomial_element.pyx", line 5345, in > sage.ring > s.polynomial.polynomial_element.Polynomial.roots > Failed example: > ((x^3 -1)).roots() > Expected: > [(0.9999999999999998, 1)] > Got: > [(1.0000000000000002, 1)] > ********************************************************************** > File "src/sage/rings/polynomial/polynomial_element.pyx", line 5347, in > sage.ring > s.polynomial.polynomial_element.Polynomial.roots > Failed example: > ((x^3 -1)).roots(multiplicities=False) > Expected: > [0.9999999999999998] > Got: > [1.0000000000000002] > ********************************************************************** > File "src/sage/rings/polynomial/polynomial_element.pyx", line 5453, in > sage.ring > s.polynomial.polynomial_element.Polynomial.roots > Failed example: > for (fld_in, fld_out) in flds: > x = polygen(fld_in) > f = x^3 - fld_in(2) > x2 = polygen(fld_out) > f2 = x2^3 - fld_out(2) > for algo in (None, 'pari', 'numpy'): > rts = f.roots(ring=fld_out, multiplicities=False) > if fld_in == fld_out and algo is None: > print fld_in, rts > for rt in rts: > assert(abs(f2(rt)) <= 1e-10) > assert(rt.parent() == fld_out) > Expected: > Real Field with 53 bits of precision [1.25992104989487] > Real Double Field [1.2599210498948734] > Real Field with 100 bits of precision [1.2599210498948731647672106073] > Complex Field with 53 bits of precision [1.25992104989487, > -0.62996052494743 > ... - 1.09112363597172*I, -0.62996052494743... + 1.09112363597172*I] > Complex Double Field [1.259921049894873, -0.6299605249474364 - > 1.09112363597 > 17214*I, -0.6299605249474365 + 1.0911236359717214*I] > Complex Field with 100 bits of precision > [1.2599210498948731647672106073, -0 > .62996052494743658238360530364 - 1.0911236359717214035600726142*I, > -0.6299605249 > 4743658238360530364 + 1.0911236359717214035600726142*I] > Got: > Real Field with 53 bits of precision [1.25992104989487] > Real Double Field [1.259921049894873] > Real Field with 100 bits of precision [1.2599210498948731647672106073] > Complex Field with 53 bits of precision [1.25992104989487, > -0.62996052494743 > 7 - 1.09112363597172*I, -0.629960524947437 + 1.09112363597172*I] > Complex Double Field [1.2599210498948727, -0.6299605249474364 - > 1.0911236359 > 717214*I, -0.6299605249474362 + 1.0911236359717211*I] > Complex Field with 100 bits of precision > [1.2599210498948731647672106073, -0 > .62996052494743658238360530364 - 1.0911236359717214035600726142*I, > -0.6299605249 > 4743658238360530364 + 1.0911236359717214035600726142*I] > ********************************************************************** > > Justin > > -- > Justin C. Walker, Curmudgeon at Large > Institute for the Absorption of Federal Funds > ----------- > Like the ski resort full of girls hunting for husbands > and husbands hunting for girls, the situation is not > as symmetrical as it might seem. > - Alan MacKay > -- > > -- You received this message because you are subscribed to the Google Groups "sage-release" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-release+unsubscr...@googlegroups.com. To post to this group, send email to sage-release@googlegroups.com. Visit this group at http://groups.google.com/group/sage-release. For more options, visit https://groups.google.com/d/optout.
