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bug #1272: Let CommaInitializer work for more border cases (enhances fix of bug #1242).

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The unit test tests all combinations of 2x2 block-sizes from 0 to 3.
This commit is contained in:
Christoph Hertzberg 2016-08-08 17:26:48 +02:00
parent fe4b927e9c
commit 3e4a33d4ba
2 changed files with 61 additions and 34 deletions
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17
Eigen/src/Core/CommaInitializer.h
View File

@ -80,12 +80,7 @@ struct CommaInitializer
EIGEN_DEVICE_FUNC
CommaInitializer& operator,(const DenseBase<OtherDerived>& other)
{
if(other.rows()==0)
{
m_col += other.cols();
return *this;
}
if (m_col==m_xpr.cols())
if (m_col==m_xpr.cols() && (other.cols()!=0 || other.rows()!=m_currentBlockRows))
{
m_row+=m_currentBlockRows;
m_col = 0;
@ -93,15 +88,11 @@ struct CommaInitializer
eigen_assert(m_row+m_currentBlockRows<=m_xpr.rows()
&& "Too many rows passed to comma initializer (operator<<)");
}
eigen_assert((m_col<m_xpr.cols() || (m_xpr.cols()==0 && m_col==0))
eigen_assert((m_col + other.cols() <= m_xpr.cols())
&& "Too many coefficients passed to comma initializer (operator<<)");
eigen_assert(m_currentBlockRows==other.rows());
if (OtherDerived::SizeAtCompileTime != Dynamic)
m_xpr.template block<OtherDerived::RowsAtCompileTime != Dynamic ? OtherDerived::RowsAtCompileTime : 1,
OtherDerived::ColsAtCompileTime != Dynamic ? OtherDerived::ColsAtCompileTime : 1>
(m_row, m_col) = other;
else
m_xpr.block(m_row, m_col, other.rows(), other.cols()) = other;
m_xpr.template block<OtherDerived::RowsAtCompileTime, OtherDerived::ColsAtCompileTime>
(m_row, m_col, other.rows(), other.cols()) = other;
m_col += other.cols();
return *this;
}

78
test/commainitializer.cpp
View File

@ -9,6 +9,61 @@
#include "main.h"
template<int M1, int M2, int N1, int N2>
void test_blocks()
{
Matrix<int, M1+M2, N1+N2> m_fixed;
MatrixXi m_dynamic(M1+M2, N1+N2);
Matrix<int, M1, N1> mat11; mat11.setRandom();
Matrix<int, M1, N2> mat12; mat12.setRandom();
Matrix<int, M2, N1> mat21; mat21.setRandom();
Matrix<int, M2, N2> mat22; mat22.setRandom();
MatrixXi matx11 = mat11, matx12 = mat12, matx21 = mat21, matx22 = mat22;
// The only remaining border case is M1==M2>0 && N1==N2==0.
// In that case it is not possible to decide (without backtracking) if a block starts a new row or does not
if(M1 != M2 || M1 == 0 || N1>0 || N2>0)
{
VERIFY_IS_EQUAL((m_fixed << mat11, mat12, mat21, matx22).finished(), (m_dynamic << mat11, matx12, mat21, matx22).finished());
VERIFY_IS_EQUAL((m_fixed << mat12, mat11, matx21, mat22).finished(), (m_dynamic << mat12, matx11, matx21, mat22).finished());
}
if(N1 > 0)
{
VERIFY_RAISES_ASSERT((m_fixed << mat11, mat12, mat11, mat21, mat22));
VERIFY_RAISES_ASSERT((m_fixed << mat11, mat12, mat21, mat21, mat22));
}
else if(N2 > 0 || M1 != M2) // border case if both sublocks have zero columns and same number of rows
{
// allow insertion of zero-column blocks:
VERIFY_IS_EQUAL((m_fixed << mat11, mat12, mat11, mat11, mat21, mat21, mat22).finished(), (m_dynamic << mat12, mat22).finished());
}
if(M1 != M2)
{
VERIFY_RAISES_ASSERT((m_fixed << mat11, mat21, mat12, mat22));
}
}
template<int N>
struct test_block_recursion
{
static void run()
{
test_blocks<(N>>6)&3, (N>>4)&3, (N>>2)&3, N & 3>();
test_block_recursion<N-1>::run();
}
};
template<>
struct test_block_recursion<-1>
{
static void run() { }
};
void test_commainitializer()
{
Matrix3d m3;
@ -45,25 +100,6 @@ void test_commainitializer()
VERIFY_IS_APPROX(m3, ref);
// Check with empty matrices (bug #1242)
{
int const M = 0;
int const N1 = 2;
int const N2 = 1;
{
Matrix<double, M, N1> A1;
Matrix<double, M, N2> A2;
Matrix<double, M, N1 + N2> B;
B << A1, A2;
}
{
Matrix<double, N1, M> A1;
Matrix<double, N2, M> A2;
Matrix<double, N1 + N2, M> B;
B << A1,
A2;
}
}
// recursively test all block-sizes from 0 to 3:
test_block_recursion<(1<<8) - 1>();
}