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Use numext::fma for sparse x dense dot product.

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This commit is contained in:
Rasmus Munk Larsen 2025-07-02 15:51:28 -07:00
parent cc0be00435
commit 8ac2fb077d
1 changed files with 2 additions and 2 deletions
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4
Eigen/src/SparseCore/SparseDot.h
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@ -36,10 +36,10 @@ inline typename internal::traits<Derived>::Scalar SparseMatrixBase<Derived>::dot
Scalar res1(0);
Scalar res2(0);
for (; i; ++i) {
res1 += numext::conj(i.value()) * other.coeff(i.index());
res1 = numext::fma(numext::conj(i.value()), other.coeff(i.index()), res1);
++i;
if (i) {
res2 += numext::conj(i.value()) * other.coeff(i.index());
res2 = numext::fma(numext::conj(i.value()), other.coeff(i.index()), res2);
}
}
return res1 + res2;