fix #74: sparse triangular solver for lower/row-major matrices

2026-04-10 11:34:33 +08:00 · 2009-12-14 10:20:35 +01:00
parent 72fc81dd9d
commit b581cb870c
2 changed files with 12 additions and 1 deletions
--- a/Eigen/src/Sparse/TriangularSolver.h
+++ b/Eigen/src/Sparse/TriangularSolver.h
@@ -43,8 +43,11 @@ struct ei_solve_triangular_selector<Lhs,Rhs,LowerTriangular,RowMajor|IsSparse>
        {
          lastVal = it.value();
          lastIndex = it.index();
+          if(lastIndex == i)
+            break;
          tmp -= lastVal * other.coeff(lastIndex,col);
        }
+
        if (Lhs::Flags & UnitDiagBit)
          other.coeffRef(i,col) = tmp;
        else