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overload operartor* with a ProductBase such that "scalar * (mat * mat)" is optimized

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as one could naturally expect
This commit is contained in:
Gael Guennebaud
2009-08-11 15:15:06 +02:00
parent a4f6642518
commit afbd73b5cd
9 changed files with 76 additions and 16 deletions
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2
test/product_notemporary.cpp
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@@ -79,7 +79,7 @@ template<typename MatrixType> void product_notemporary(const MatrixType& m)
VERIFY_EVALUATION_COUNT( m3 = (s1 * m1 * s2 * (m1*s3+m2*s2).adjoint()).lazy(), 1);
VERIFY_EVALUATION_COUNT( m3 = ((s1 * m1).adjoint() * s2 * m2).lazy(), 0);
VERIFY_EVALUATION_COUNT( m3 -= (s1 * (-m1*s3).adjoint() * (s2 * m2 * s3)).lazy(), 0);
VERIFY_EVALUATION_COUNT( m3 -= (s1 * (m1.transpose() * m2)).lazy(), 1);
VERIFY_EVALUATION_COUNT( m3 -= (s1 * (m1.transpose() * m2)).lazy(), 0);
VERIFY_EVALUATION_COUNT(( m3.block(r0,r0,r1,r1) += (-m1.block(r0,c0,r1,c1) * (s2*m2.block(r0,c0,r1,c1)).adjoint()).lazy() ), 0);
VERIFY_EVALUATION_COUNT(( m3.block(r0,r0,r1,r1) -= (s1 * m1.block(r0,c0,r1,c1) * m2.block(c0,r0,c1,r1)).lazy() ), 0);

5
test/product_symm.cpp
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@@ -94,6 +94,11 @@ template<typename Scalar, int Size, int OtherSize> void symm(int size = Size, in
VERIFY_IS_APPROX(rhs12 = (s1*m2.adjoint()).template selfadjointView<LowerTriangular>() * (s2*rhs3).conjugate(),
rhs13 = (s1*m1.adjoint()) * (s2*rhs3).conjugate());
m2 = m1.template triangularView<UpperTriangular>(); rhs13 = rhs12;
VERIFY_IS_APPROX(rhs12 += (s1 * ((m2.adjoint()).template selfadjointView<LowerTriangular>() * (s2*rhs3).conjugate())).lazy(),
rhs13 += (s1*m1.adjoint()) * (s2*rhs3).conjugate());
// test matrix * selfadjoint
symm_extra<OtherSize>::run(m1,m2,rhs2,rhs22,rhs23,s1,s2);