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Zero-out matrix for empty set of triplets.

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Antonio Sánchez 2025-09-02 22:51:17 +00:00 committed by Charles Schlosser
parent 52fc978c6f
commit da1a34a6ba
1 changed files with 5 additions and 1 deletions
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6
Eigen/src/SparseCore/SparseMatrix.h
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@ -1130,7 +1130,11 @@ void set_from_triplets(const InputIterator& begin, const InputIterator& end, Spa
using TransposedSparseMatrix =
SparseMatrix<typename SparseMatrixType::Scalar, IsRowMajor ? ColMajor : RowMajor, StorageIndex>;
if (begin == end) return;
if (begin == end) {
// Clear out existing data (if any).
mat.setZero();
return;
}
// There are two strategies to consider for constructing a matrix from unordered triplets:
// A) construct the 'mat' in its native storage order and sort in-place (less memory); or,