skipped tests

[John W. Eaton]

On  5-Jan-2011, Doug Stewart wrote:

| I am using ubuntu and tip from hg.
| 
| In fntests.log I see
| 
| >>>>> processing 
/home/doug/octave_dev/compiling/octave/src/DLD-FUNCTIONS/lu.cc
|   ***** testif HAVE_QRUPDATE_LUU
|  [L,U,P] = lu(A);
|  [L,U] = luupdate(L,U,P*u,v);
|  assert(norm(vec(tril(L)-L),Inf) == 0)
|  assert(norm(vec(triu(U)-U),Inf) == 0)
|  assert(norm(vec(P'*L*U - A - u*v.'),Inf) < norm(A)*1e1*eps)
|  
| ----- skipped test
| 
|   ***** testif HAVE_QRUPDATE_LUU
|  [L,U,P] = lu(Ac);
|  [L,U] = luupdate(L,U,P*uc,vc);
|  assert(norm(vec(tril(L)-L),Inf) == 0)
| etc.
| 
| 
| 
| 
| In lu.cc   at the bottom we have
| 
| 
| %!testif HAVE_QRUPDATE_LUU
| %! [L,U,P] = lu(A);
| %! [L,U] = luupdate(L,U,P*u,v);
| %! assert(norm(vec(tril(L)-L),Inf) == 0)
| %! assert(norm(vec(triu(U)-U),Inf) == 0)
| %! assert(norm(vec(P'*L*U - A - u*v.'),Inf) < norm(A)*1e1*eps)
| %! 
| %!testif HAVE_QRUPDATE_LUU
| %! [L,U,P] = lu(Ac);
| %! [L,U] = luupdate(L,U,P*uc,vc);
| 
| etc
| 
| What I don't see is where HAVE_QRUPDATE_LUU is initilased to be true or false.
| I am assuming it is FALSE and therefore skipping the tests.

The "testif" directive looks in the list of -D options found in the
string returned by

  octave_config_info ("DEF")

So it looks like your copy of Octave was built with a version of the
qrupdate library that does not have the LU update functions.

jwe