test libinterp/corefcn/data.cc-tst FAIL

[Dmitri A. Sergatskov]

test libinterp/corefcn/data.cc-tst FAIL

after the change:

1. Category	None
   Changed by	Rik <address@hidden>
   Changed at	Sat 06 Jan 2018 19:43:16
   Repository	http://hg.savannah.gnu.org/hgweb/octave
   Project	octave
   Branch	default
   Revision	22a2bc91cc7f28ae9240376357bd9ddb7122c68f

   Comments

   Add more BIST tests for linspace.
   
   * data.cc (Flinspace): Change error message to refer to variables START,END
   which are used in documentation.  Add BIST test for the spacing between
   values created by linspace.  Add test for corner case of START=-0, END=0.
   Add variable names to expected message for %!error tests.

   Changed files

   • libinterp/corefcn/data.cc

***** test
 x1 = linspace (1, 2);
 x2 = linspace (1, 2, 10);
 x3 = linspace (1, -2, 10);
 assert (size (x1) == [1, 100] && x1(1) == 1 && x1(100) == 2);
 assert (x1(2) - x1(1), (2 - 1)/ (100 - 1), eps);
 assert (size (x2) == [1, 10] && x2(1) == 1 && x2(10) == 2);
 assert (x2(2) - x2(1), (2 - 1)/ (10 - 1), eps);
 assert (size (x3) == [1, 10] && x3(1) == 1 && x3(10) == -2);
 assert (x3(2) - x3(1), (1 - -2)/ (10 - 1), eps);
!!!!! test failed
ASSERT errors for:  assert (x3 (2) - x3 (1),(1 - -2) / (10 - 1),eps)

  Location  |  Observed  |  Expected  |  Reason
     ()        -0.33333     0.33333      Abs err 0.66667 exceeds tol 2.2204e-16 by 0.7
shared variables   scalar structure containing the fields:

    xs =

Compressed Column Sparse (rows = 1, cols = 4, nnz = 3 [75%])

  (1, 2) ->  1
  (1, 3) ->  2
  (1, 4) ->  3