diff options
author | Gael Guennebaud <g.gael@free.fr> | 2017-01-25 15:27:13 +0100 |
---|---|---|
committer | Gael Guennebaud <g.gael@free.fr> | 2017-01-25 15:27:13 +0100 |
commit | d06a48959abac6369336d3873d46aee78f8fbec2 (patch) | |
tree | 8b27c8d01d972f84dae89dee40e8618782e74f63 /test/nullary.cpp | |
parent | e96c77668d0cbe8951ef2dbfae10d2fd6f4566a1 (diff) |
bug #1383: Fix regression from 3.2 with LinSpaced(n,0,n-1) with n==0.
Diffstat (limited to 'test/nullary.cpp')
-rw-r--r-- | test/nullary.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/nullary.cpp b/test/nullary.cpp index 351d26e74..bb0cea937 100644 --- a/test/nullary.cpp +++ b/test/nullary.cpp @@ -152,6 +152,30 @@ void testVectorType(const VectorType& base) m.tail(size-1).setLinSpaced(low, high); VERIFY_IS_APPROX(m(size-1), high); } + + // regression test for bug 1383 (LinSpaced with empty size/range) + { + Index n0 = VectorType::SizeAtCompileTime==Dynamic ? 0 : VectorType::SizeAtCompileTime; + low = internal::random<Scalar>(); + m = VectorType::LinSpaced(n0,low,low-1); + VERIFY(m.size()==n0); + + if(VectorType::SizeAtCompileTime==Dynamic) + { + VERIFY_IS_EQUAL(VectorType::LinSpaced(n0,0,Scalar(n0-1)).sum(),Scalar(0)); + VERIFY_IS_EQUAL(VectorType::LinSpaced(n0,low,low-1).sum(),Scalar(0)); + } + + m.setLinSpaced(n0,0,Scalar(n0-1)); + VERIFY(m.size()==n0); + m.setLinSpaced(n0,low,low-1); + VERIFY(m.size()==n0); + + // empty range only: + VERIFY_IS_APPROX(VectorType::LinSpaced(size,low,low),VectorType::Constant(size,low)); + m.setLinSpaced(size,low,low); + VERIFY_IS_APPROX(m,VectorType::Constant(size,low)); + } } template<typename MatrixType> |