devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Added an ei_linspaced_op to create linearly spaced vectors.

Browse Source 
Added setLinSpaced/LinSpaced functionality to DenseBase.
Improved vectorized assignment - overcomes MSVC optimization issues.
CwiseNullaryOp is now requiring functors to offer 1D and 2D operators.
Adapted existing functors to the new CwiseNullaryOp requirements.
Added ei_plset to create packages as [a, a+1, ..., a+size].
Added more nullaray unit tests.
This commit is contained in:
Hauke Heibel
2010-01-26 19:42:17 +01:00
parent afb9bf6281
commit 4365a48748
13 changed files with 252 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
test/nullary.cpp
View File

@@ -46,6 +46,54 @@ bool equalsIdentity(const MatrixType& A)
return offDiagOK && diagOK;
}
template<typename VectorType>
void testVectorType(const VectorType& base)
{
typedef typename ei_traits<VectorType>::Scalar Scalar;
Scalar low = ei_random(-500,500);
Scalar high = ei_random(-500,500);
if (low>high) std::swap(low,high);
const int size = base.size();
const Scalar step = (high-low)/(size-1);
// check whether the result yields what we expect it to do
VectorType m(base);
m.setLinSpaced(low,high,size);
VectorType n(size);
for (int i=0; i<size; ++i)
n(i) = low+i*step;
VERIFY( (m-n).norm() < std::numeric_limits<Scalar>::epsilon()*10e3 );
// random access version
m = VectorType::LinSpaced(low,high,size);
VERIFY( (m-n).norm() < std::numeric_limits<Scalar>::epsilon()*10e3 );
// These guys sometimes fail! This is not good. Any ideas how to fix them!?
//VERIFY( m(m.size()-1) == high );
//VERIFY( m(0) == low );
// sequential access version
m = VectorType::LinSpaced(Sequential,low,high,size);
VERIFY( (m-n).norm() < std::numeric_limits<Scalar>::epsilon()*10e3 );
// These guys sometimes fail! This is not good. Any ideas how to fix them!?
//VERIFY( m(m.size()-1) == high );
//VERIFY( m(0) == low );
// check whether everything works with row and col major vectors
Matrix<Scalar,Dynamic,1> row_vector(size);
Matrix<Scalar,1,Dynamic> col_vector(size);
row_vector.setLinSpaced(low,high,size);
col_vector.setLinSpaced(low,high,size);
VERIFY( (row_vector-col_vector.transpose()).norm() < 1e-10 );
Matrix<Scalar,Dynamic,1> size_changer(size+50);
size_changer.setLinSpaced(low,high,size);
VERIFY( size_changer.size() == size );
}
template<typename MatrixType>
void testMatrixType(const MatrixType& m)
{
@@ -63,4 +111,10 @@ void test_nullary()
CALL_SUBTEST_1( testMatrixType(Matrix2d()) );
CALL_SUBTEST_2( testMatrixType(MatrixXcf(50,50)) );
CALL_SUBTEST_3( testMatrixType(MatrixXf(5,7)) );
CALL_SUBTEST_4( testVectorType(VectorXd(51)) );
CALL_SUBTEST_5( testVectorType(VectorXd(41)) );
CALL_SUBTEST_6( testVectorType(Vector3d()) );
CALL_SUBTEST_7( testVectorType(VectorXf(51)) );
CALL_SUBTEST_8( testVectorType(VectorXf(41)) );
CALL_SUBTEST_9( testVectorType(Vector3f()) );
}