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bug #1479: fix failure detection in LDLT

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(grafted from 672bdc126b
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This commit is contained in:
Gael Guennebaud
2017-11-16 17:55:24 +01:00
parent d18877f18d
commit c20043c8fd
2 changed files with 19 additions and 0 deletions
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2
Eigen/src/Cholesky/LDLT.h
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@@ -376,6 +376,8 @@ template<> struct ldlt_inplace<Lower>
if((rs>0) && pivot_is_valid)
A21 /= realAkk;
else if(rs>0)
ret = ret && (A21.array()==Scalar(0)).all();
if(found_zero_pivot && pivot_is_valid) ret = false; // factorization failed
else if(!pivot_is_valid) found_zero_pivot = true;