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Add evaluator support for diagonal products

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This commit is contained in:
Gael Guennebaud
2014-02-17 16:10:55 +01:00
parent 94acccc126
commit bffa15142c
3 changed files with 192 additions and 7 deletions
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17
test/evaluators.cpp
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@@ -151,19 +151,19 @@ void test_evaluators()
c = a*a;
copy_using_evaluator(a, prod(a,a));
VERIFY_IS_APPROX(a,c);
// check compound assignment of products
d = c;
add_assign_using_evaluator(c.noalias(), prod(a,b));
d.noalias() += a*b;
VERIFY_IS_APPROX(c, d);
d = c;
subtract_assign_using_evaluator(c.noalias(), prod(a,b));
d.noalias() -= a*b;
VERIFY_IS_APPROX(c, d);
}
{
// test product with all possible sizes
int s = internal::random<int>(1,100);
@@ -458,4 +458,15 @@ void test_evaluators()
VERIFY_IS_APPROX_EVALUATOR2(B, prod(A.selfadjointView<Upper>(),A), MatrixXd(A.selfadjointView<Upper>()*A));
}
{
// test diagonal shapes
VectorXd d = VectorXd::Random(6);
MatrixXd A = MatrixXd::Random(6,6), B(6,6);
A.setRandom();B.setRandom();
VERIFY_IS_APPROX_EVALUATOR2(B, lazyprod(d.asDiagonal(),A), MatrixXd(d.asDiagonal()*A));
VERIFY_IS_APPROX_EVALUATOR2(B, lazyprod(A,d.asDiagonal()), MatrixXd(A*d.asDiagonal()));
}
}