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add lpNorm<p>() method to MatrixBase, implemented in Array module, with

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specializations for cases p=1,2,Eigen::Infinity.
This commit is contained in:
Benoit Jacob
2008-11-03 22:47:00 +00:00
parent a0ec0fca5a
commit e80099932a
5 changed files with 102 additions and 0 deletions
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18
test/array.cpp
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@@ -113,6 +113,16 @@ template<typename MatrixType> void comparisons(const MatrixType& m)
VERIFY_IS_APPROX( (m1.cwise().abs().cwise()<mid).select(0,m1), m3);
}
template<typename VectorType> void lpNorm(const VectorType& v)
{
VectorType u = VectorType::Random(v.size());
VERIFY_IS_APPROX(u.template lpNorm<Infinity>(), u.cwise().abs().maxCoeff());
VERIFY_IS_APPROX(u.template lpNorm<1>(), u.cwise().abs().sum());
VERIFY_IS_APPROX(u.template lpNorm<2>(), ei_sqrt(u.cwise().abs().cwise().square().sum()));
VERIFY_IS_APPROX(ei_pow(u.template lpNorm<5>(), typename VectorType::RealScalar(5)), u.cwise().abs().cwise().pow(5).sum());
}
void test_array()
{
for(int i = 0; i < g_repeat; i++) {
@@ -130,4 +140,12 @@ void test_array()
CALL_SUBTEST( comparisons(MatrixXf(8, 12)) );
CALL_SUBTEST( comparisons(MatrixXi(8, 12)) );
}
for(int i = 0; i < g_repeat; i++) {
CALL_SUBTEST( lpNorm(Matrix<float, 1, 1>()) );
CALL_SUBTEST( lpNorm(Vector2f()) );
CALL_SUBTEST( lpNorm(Vector3d()) );
CALL_SUBTEST( lpNorm(Vector4f()) );
CALL_SUBTEST( lpNorm(VectorXf(16)) );
CALL_SUBTEST( lpNorm(VectorXcd(10)) );
}
}