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bug #1003: assert in MapBase if the provided pointer is not aligned on scalar while it is expected to be. Also add a EIGEN_ALIGN8 macro.

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This commit is contained in:
Gael Guennebaud 2015-06-09 17:42:09 +02:00
parent 0eb06f1391
commit 785b9c0127
2 changed files with 3 additions and 0 deletions
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2
Eigen/src/Core/MapBase.h
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@ -160,6 +160,8 @@ template<typename Derived> class MapBase<Derived, ReadOnlyAccessors>
EIGEN_DEVICE_FUNC
void checkSanity() const
{
eigen_assert(EIGEN_IMPLIES(internal::packet_traits<Scalar>::AlignedOnScalar, (size_t(m_data) % sizeof(Scalar)) == 0)
&& "input pointer is not aligned on scalar boundary, e.g., use \"EIGEN_ALIGN8 T ptr[N];\" for double or complex<float>");
eigen_assert(EIGEN_IMPLIES(internal::traits<Derived>::IsAligned, (size_t(m_data) % EIGEN_ALIGN_BYTES) == 0) && "data is not aligned");
}

1
Eigen/src/Core/util/Macros.h
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@ -592,6 +592,7 @@ namespace Eigen {
#error Please tell me what is the equivalent of __attribute__((aligned(n))) for your compiler
#endif
#define EIGEN_ALIGN8 EIGEN_ALIGN_TO_BOUNDARY(8)
#define EIGEN_ALIGN16 EIGEN_ALIGN_TO_BOUNDARY(16)
#define EIGEN_ALIGN32 EIGEN_ALIGN_TO_BOUNDARY(32)
#define EIGEN_ALIGN_DEFAULT EIGEN_ALIGN_TO_BOUNDARY(EIGEN_ALIGN_BYTES)