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Selectively add constexpr to Core expression template scaffolding

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libeigen/eigen!2184

Closes #3041

Co-authored-by: Rasmus Munk Larsen <rmlarsen@gmail.com>
This commit is contained in:
Rasmus Munk Larsen
2026-02-24 19:59:10 -08:00
parent 34092d2788
commit 61895c5978
70 changed files with 986 additions and 841 deletions
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24
Eigen/src/Core/MapBase.h
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@@ -97,23 +97,23 @@ class MapBase<Derived, ReadOnlyAccessors> : public internal::dense_xpr_base<Deri
EIGEN_DEVICE_FUNC constexpr const Scalar* data() const { return m_data; }
/** \copydoc PlainObjectBase::coeff(Index,Index) const */
EIGEN_DEVICE_FUNC inline const Scalar& coeff(Index rowId, Index colId) const {
EIGEN_DEVICE_FUNC constexpr inline const Scalar& coeff(Index rowId, Index colId) const {
return m_data[colId * colStride() + rowId * rowStride()];
}
/** \copydoc PlainObjectBase::coeff(Index) const */
EIGEN_DEVICE_FUNC inline const Scalar& coeff(Index index) const {
EIGEN_DEVICE_FUNC constexpr inline const Scalar& coeff(Index index) const {
EIGEN_STATIC_ASSERT_INDEX_BASED_ACCESS(Derived)
return m_data[index * innerStride()];
}
/** \copydoc PlainObjectBase::coeffRef(Index,Index) const */
EIGEN_DEVICE_FUNC inline const Scalar& coeffRef(Index rowId, Index colId) const {
EIGEN_DEVICE_FUNC constexpr inline const Scalar& coeffRef(Index rowId, Index colId) const {
return this->m_data[colId * colStride() + rowId * rowStride()];
}
/** \copydoc PlainObjectBase::coeffRef(Index) const */
EIGEN_DEVICE_FUNC inline const Scalar& coeffRef(Index index) const {
EIGEN_DEVICE_FUNC constexpr inline const Scalar& coeffRef(Index index) const {
EIGEN_STATIC_ASSERT_INDEX_BASED_ACCESS(Derived)
return this->m_data[index * innerStride()];
}
@@ -132,14 +132,14 @@ class MapBase<Derived, ReadOnlyAccessors> : public internal::dense_xpr_base<Deri
}
/** \internal Constructor for fixed size matrices or vectors */
EIGEN_DEVICE_FUNC explicit inline MapBase(PointerType dataPtr)
EIGEN_DEVICE_FUNC constexpr explicit inline MapBase(PointerType dataPtr)
: m_data(dataPtr), m_rows(RowsAtCompileTime), m_cols(ColsAtCompileTime) {
EIGEN_STATIC_ASSERT_FIXED_SIZE(Derived)
checkSanity<Derived>();
}
/** \internal Constructor for dynamically sized vectors */
EIGEN_DEVICE_FUNC inline MapBase(PointerType dataPtr, Index vecSize)
EIGEN_DEVICE_FUNC constexpr inline MapBase(PointerType dataPtr, Index vecSize)
: m_data(dataPtr),
m_rows(RowsAtCompileTime == Dynamic ? vecSize : Index(RowsAtCompileTime)),
m_cols(ColsAtCompileTime == Dynamic ? vecSize : Index(ColsAtCompileTime)) {
@@ -150,7 +150,7 @@ class MapBase<Derived, ReadOnlyAccessors> : public internal::dense_xpr_base<Deri
}
/** \internal Constructor for dynamically sized matrices */
EIGEN_DEVICE_FUNC inline MapBase(PointerType dataPtr, Index rows, Index cols)
EIGEN_DEVICE_FUNC constexpr inline MapBase(PointerType dataPtr, Index rows, Index cols)
: m_data(dataPtr), m_rows(rows), m_cols(cols) {
eigen_assert((dataPtr == 0) || (rows >= 0 && (RowsAtCompileTime == Dynamic || RowsAtCompileTime == rows) &&
cols >= 0 && (ColsAtCompileTime == Dynamic || ColsAtCompileTime == cols)));
@@ -238,11 +238,11 @@ class MapBase<Derived, WriteAccessors> : public MapBase<Derived, ReadOnlyAccesso
return this->m_data;
} // no const-cast here so non-const-correct code will give a compile error
EIGEN_DEVICE_FUNC inline ScalarWithConstIfNotLvalue& coeffRef(Index row, Index col) {
EIGEN_DEVICE_FUNC constexpr inline ScalarWithConstIfNotLvalue& coeffRef(Index row, Index col) {
return this->m_data[col * colStride() + row * rowStride()];
}
EIGEN_DEVICE_FUNC inline ScalarWithConstIfNotLvalue& coeffRef(Index index) {
EIGEN_DEVICE_FUNC constexpr inline ScalarWithConstIfNotLvalue& coeffRef(Index index) {
EIGEN_STATIC_ASSERT_INDEX_BASED_ACCESS(Derived)
return this->m_data[index * innerStride()];
}
@@ -258,9 +258,9 @@ class MapBase<Derived, WriteAccessors> : public MapBase<Derived, ReadOnlyAccesso
internal::pstoret<Scalar, PacketScalar, StoreMode>(this->m_data + index * innerStride(), val);
}
EIGEN_DEVICE_FUNC explicit inline MapBase(PointerType dataPtr) : Base(dataPtr) {}
EIGEN_DEVICE_FUNC inline MapBase(PointerType dataPtr, Index vecSize) : Base(dataPtr, vecSize) {}
EIGEN_DEVICE_FUNC inline MapBase(PointerType dataPtr, Index rows, Index cols) : Base(dataPtr, rows, cols) {}
EIGEN_DEVICE_FUNC constexpr explicit inline MapBase(PointerType dataPtr) : Base(dataPtr) {}
EIGEN_DEVICE_FUNC constexpr inline MapBase(PointerType dataPtr, Index vecSize) : Base(dataPtr, vecSize) {}
EIGEN_DEVICE_FUNC constexpr inline MapBase(PointerType dataPtr, Index rows, Index cols) : Base(dataPtr, rows, cols) {}
EIGEN_DEVICE_FUNC Derived& operator=(const MapBase& other) {
ReadOnlyMapBase::Base::operator=(other);