Opened 8 years ago

Closed 8 years ago

#14449 closed defect (duplicate)

Numerical noise in matrix_double_dense.pyx

Reported by: jdemeyer Owned by: jason, was
Priority: blocker Milestone: sage-duplicate/invalid/wontfix
Component: linear algebra Keywords:
Cc: Merged in:
Authors: Reviewers: Jeroen Demeyer
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Status badges

Description

Some unidentified ticket is causing numerical noise:

sage -t devel/sage/sage/matrix/matrix_double_dense.pyx
**********************************************************************
File "devel/sage/sage/matrix/matrix_double_dense.pyx", line 1951, in sage.matrix.matrix_double_dense.Matrix_double_dense.solve_right
Failed example:
    A.solve_right([1]*5)
Expected:
    (5.0..., -120.0..., 630.0..., -1120.0..., 630.0...)
Got:
    (4.99999999999, -120.0, 630.0, -1120.0, 630.0)
**********************************************************************
File "devel/sage/sage/matrix/matrix_double_dense.pyx", line 2091, in sage.matrix.matrix_double_dense.Matrix_double_dense.solve_left
Failed example:
    A.solve_left([1]*5)
Expected:
    (5.0..., -120.0..., 630.0..., -1120.0..., 630.0...)
Got:
    (4.99999999999, -120.0, 630.0, -1120.0, 630.0)
**********************************************************************

(seen on x86_64 and on ia64)

Change History (1)

comment:1 Changed 8 years ago by jdemeyer

  • Authors Jeroen Demeyer deleted
  • Milestone changed from sage-5.10 to sage-duplicate/invalid/wontfix
  • Resolution set to duplicate
  • Reviewers set to Jeroen Demeyer
  • Status changed from new to closed

See #14416.

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