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

Add coeff-wise comparisons to scalar operators. You can now write:

Browse Source 
mat.cwise() < 2
instead of:
   mat.cwise() < MatrixType::Constant(mat.rows(), mat.cols(), 2)
This commit is contained in:
Gael Guennebaud
2008-09-03 17:56:06 +00:00
parent 59dc1da5bf
commit e14aa8c8aa
3 changed files with 130 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
test/array.cpp
View File

@@ -89,6 +89,12 @@ template<typename MatrixType> void comparisons(const MatrixType& m)
VERIFY(! (m1.cwise() > m3).all() );
}
// comparisons to scalar
VERIFY( (m1.cwise() != (m1(r,c)+1) ).any() );
VERIFY( (m1.cwise() > (m1(r,c)-1) ).any() );
VERIFY( (m1.cwise() < (m1(r,c)+1) ).any() );
VERIFY( (m1.cwise() == m1(r,c) ).any() );
// test Select
VERIFY_IS_APPROX( (m1.cwise()<m2).select(m1,m2), m1.cwise().min(m2) );
VERIFY_IS_APPROX( (m1.cwise()>m2).select(m1,m2), m1.cwise().max(m2) );
@@ -98,10 +104,13 @@ template<typename MatrixType> void comparisons(const MatrixType& m)
m3(i,j) = ei_abs(m1(i,j))<mid ? 0 : m1(i,j);
VERIFY_IS_APPROX( (m1.cwise().abs().cwise()<MatrixType::Constant(rows,cols,mid))
.select(MatrixType::Zero(rows,cols),m1), m3);
// shorter versions:
VERIFY_IS_APPROX( (m1.cwise().abs().cwise()<MatrixType::Constant(rows,cols,mid))
.select(0,m1), m3);
VERIFY_IS_APPROX( (m1.cwise().abs().cwise()>=MatrixType::Constant(rows,cols,mid))
.select(m1,0), m3);
// even shorter version:
VERIFY_IS_APPROX( (m1.cwise().abs().cwise()<mid).select(0,m1), m3);
}
void test_array()