COIN backend: More basis status and tableau data functions

[mkoeppe]

This is a follow-up to #18763.

It adds the missing get_row_price and get_reduced_cost functions.

These are the remaining functions necessary to implement #18804.

CC: @yuan-zhou @nathanncohen @videlec @dimpase

Component: numerical

Author: Aedi Wang, Wang de Mao

Branch/Commit: cef0fc3

Reviewer: Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/19471

[mkoeppe]

Description changed:

--- 
+++ 
@@ -2,3 +2,4 @@
 
 It adds the missing get_row_price and get_reduced_cost functions.
 
+These are the remaining functions necessary to implement #18804.

[uduse]

Branch: u/zwang/COIN_backend_More_basis_status_and_tableau_data_functions

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

6373b5f

More basis status and tableau data functions

[sagetrac-git]

Commit: 6373b5f

[dimpase]

comment:5

what is the meaning of the weird string after fails here:
raise MIPSolverException('CBC : Signal sent, getBasics() fails eairsntiaerksivbeqyafutboueqtoduboariythdb')

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

483c528

More basis status and tableau data functions

[sagetrac-git]

Changed commit from 6373b5f to 483c528

[mkoeppe]

comment:7

Apparently that was the cat.
Fixed.

[dimpase]

Reviewer: Dima Pasechnik

[dimpase]

Changed author from Aedi Wang to Aedi Wang, Katze von Koeppe

[mkoeppe]

comment:10

Thanks for the review! Wrong cat, though; fixed that.

[mkoeppe]

Changed author from Aedi Wang, Katze von Koeppe to Aedi Wang, Wang de Mao

[vbraun]

comment:11

sage -t --long src/sage/numerical/backends/coin_backend.pyx
**********************************************************************
File "src/sage/numerical/backends/coin_backend.pyx", line 1595, in sage.numerical.backends.coin_backend.CoinBackend.get_basics
Failed example:
    p.solve()
Exception raised:
    Traceback (most recent call last):
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 496, in _run
        self.compile_and_execute(example, compiler, test.globs)
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 858, in compile_and_execute
        exec(compiled, globs)
      File "<doctest sage.numerical.backends.coin_backend.CoinBackend.get_basics[1]>", line 1, in <module>
        p.solve()
    NameError: name 'p' is not defined
**********************************************************************
File "src/sage/numerical/backends/coin_backend.pyx", line 1597, in sage.numerical.backends.coin_backend.CoinBackend.get_basics
Failed example:
    p.get_basics()
Exception raised:
    Traceback (most recent call last):
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 496, in _run
        self.compile_and_execute(example, compiler, test.globs)
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 858, in compile_and_execute
        exec(compiled, globs)
      File "<doctest sage.numerical.backends.coin_backend.CoinBackend.get_basics[2]>", line 1, in <module>
        p.get_basics()
    NameError: name 'p' is not defined
**********************************************************************
File "src/sage/numerical/backends/coin_backend.pyx", line 1634, in sage.numerical.backends.coin_backend.CoinBackend.get_row_price
Failed example:
    p.solve()
Exception raised:
    Traceback (most recent call last):
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 496, in _run
        self.compile_and_execute(example, compiler, test.globs)
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 858, in compile_and_execute
        exec(compiled, globs)
      File "<doctest sage.numerical.backends.coin_backend.CoinBackend.get_row_price[1]>", line 1, in <module>
        p.solve()
    NameError: name 'p' is not defined
**********************************************************************
File "src/sage/numerical/backends/coin_backend.pyx", line 1636, in sage.numerical.backends.coin_backend.CoinBackend.get_row_price
Failed example:
    p.get_row_price()
Exception raised:
    Traceback (most recent call last):
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 496, in _run
        self.compile_and_execute(example, compiler, test.globs)
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 858, in compile_and_execute
        exec(compiled, globs)
      File "<doctest sage.numerical.backends.coin_backend.CoinBackend.get_row_price[2]>", line 1, in <module>
        p.get_row_price()
    NameError: name 'p' is not defined
**********************************************************************
File "src/sage/numerical/backends/coin_backend.pyx", line 1671, in sage.numerical.backends.coin_backend.CoinBackend.get_reduced_cost
Failed example:
    p.solve()
Exception raised:
    Traceback (most recent call last):
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 496, in _run
        self.compile_and_execute(example, compiler, test.globs)
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 858, in compile_and_execute
        exec(compiled, globs)
      File "<doctest sage.numerical.backends.coin_backend.CoinBackend.get_reduced_cost[1]>", line 1, in <module>
        p.solve()
    NameError: name 'p' is not defined
**********************************************************************
File "src/sage/numerical/backends/coin_backend.pyx", line 1673, in sage.numerical.backends.coin_backend.CoinBackend.get_reduced_cost
Failed example:
    p.get_reduced_cost()
Exception raised:
    Traceback (most recent call last):
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 496, in _run
        self.compile_and_execute(example, compiler, test.globs)
      File "/Users/buildslave-sage/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 858, in compile_and_execute
        exec(compiled, globs)
      File "<doctest sage.numerical.backends.coin_backend.CoinBackend.get_reduced_cost[2]>", line 1, in <module>
        p.get_reduced_cost()
    NameError: name 'p' is not defined
**********************************************************************
3 items had failures:
   2 of   4 in sage.numerical.backends.coin_backend.CoinBackend.get_basics
   2 of   4 in sage.numerical.backends.coin_backend.CoinBackend.get_reduced_cost
   2 of   4 in sage.numerical.backends.coin_backend.CoinBackend.get_row_price
    [45 tests, 6 failures, 0.04 s]