Opened 3 years ago
Closed 3 years ago
#23923 closed defect (fixed)
Interface cases function with SymPy's piecewise
Reported by:  rws  Owned by:  

Priority:  major  Milestone:  sage8.1 
Component:  interfaces  Keywords:  
Cc:  mforets, charpent  Merged in:  
Authors:  Ralf Stephan  Reviewers:  Emmanuel Charpentier 
Report Upstream:  N/A  Work issues:  
Branch:  b261ec3 (Commits)  Commit:  b261ec3e671179d04d1922d15d9116e4f6e1d47f 
Dependencies:  #20191, #23990, #24006  Stopgaps: 
Description
In #20191 the cases
function is introduced. This ticket should interface it with SymPy's piecewise (both directions) and test with:
sage: _ = var('y, z') sage: (x^y  z).integrate(y) y*z + x^y/log(x) sage: (x^y  z).integrate(y, algorithm="sympy") # see Trac #14694 y*z + cases(((log(x) == 0, y), (1, x^y/log(x))))
Change History (12)
comment:1 Changed 3 years ago by
 Dependencies changed from #20191 to #20191, #23990
comment:2 Changed 3 years ago by
 Branch set to u/rws/interface_cases_function_with_sympy_s_piecewise
comment:3 Changed 3 years ago by
 Cc charpent added
 Commit set to ea10ee716041295de353cbef6f21d6885c825178
comment:4 Changed 3 years ago by
 Branch changed from u/rws/interface_cases_function_with_sympy_s_piecewise to u/rws/23923
comment:5 Changed 3 years ago by
 Commit changed from ea10ee716041295de353cbef6f21d6885c825178 to b80d98c2415f106f9f90270f1b0a7f9f240b76f4
Branch pushed to git repo; I updated commit sha1. New commits:
b80d98c  23923: fix typo

comment:6 Changed 3 years ago by
 Dependencies changed from #20191, #23990 to #20191, #23990, #24006
 Status changed from new to needs_review
comment:7 Changed 3 years ago by
 Status changed from needs_review to needs_work
On top of 8.1beta7+#24026 + #24006(dependency) + #23990(dependency) + #23923(present patch), one permanent failure :
sage t long src/sage/symbolic/integration/integral.py ********************************************************************** File "src/sage/symbolic/integration/integral.py", line 508, in sage.symbolic.int egration.integral.integrate Failed example: (x^y  z).integrate(y, algorithm="sympy") # see Trac #14694 Expected: Traceback (most recent call last): ... AttributeError: 'ExprCondPair' object has no attribute '_sage_' Got: y*z + cases(((log(x) == 0, y), (1, x^y/log(x)))) ********************************************************************** 1 item had failures: 1 of 126 in sage.symbolic.integration.integral.integrate [169 tests, 1 failure, 53.41 s]
==>needs_work
. Probably a booboo, though...
comment:8 Changed 3 years ago by
 Commit changed from b80d98c2415f106f9f90270f1b0a7f9f240b76f4 to b261ec3e671179d04d1922d15d9116e4f6e1d47f
Branch pushed to git repo; I updated commit sha1. New commits:
b261ec3  23923: fix doctest

comment:9 Changed 3 years ago by
 Status changed from needs_work to needs_review
comment:10 Changed 3 years ago by
 Status changed from needs_review to positive_review
On top of 8.1beta8+#24026 + #24006(dependency) + #23990(dependency) + #23923(present patch), passes ptestlong with no error whatsoever.
==>positive_review
Notes :
 I rebased the test on the hustissued 8.1.beta8
 I have kept #24026 (which
needs_review
, BTW...) because removing it entails recompiling R (which is slow) and reinstall 442 R packages, (which is slower...).
comment:11 Changed 3 years ago by
 Reviewers set to Emmanuel Charpentier
Thanks. I've added your name, hope it's not impolite.
comment:12 Changed 3 years ago by
 Branch changed from u/rws/23923 to b261ec3e671179d04d1922d15d9116e4f6e1d47f
 Resolution set to fixed
 Status changed from positive_review to closed
New commits:
23923: interface cases() with SymPy