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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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17
Eigen/src/Core/Transpose.h
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@@ -61,7 +61,7 @@ class Transpose : public TransposeImpl<MatrixType, typename internal::traits<Mat
EIGEN_GENERIC_PUBLIC_INTERFACE(Transpose)
typedef internal::remove_all_t<MatrixType> NestedExpression;
EIGEN_DEVICE_FUNC explicit EIGEN_STRONG_INLINE Transpose(MatrixType& matrix) : m_matrix(matrix) {}
EIGEN_DEVICE_FUNC constexpr explicit EIGEN_STRONG_INLINE Transpose(MatrixType& matrix) : m_matrix(matrix) {}
EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Transpose)
@@ -69,12 +69,13 @@ class Transpose : public TransposeImpl<MatrixType, typename internal::traits<Mat
EIGEN_DEVICE_FUNC constexpr Index cols() const noexcept { return m_matrix.rows(); }
/** \returns the nested expression */
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const internal::remove_all_t<MatrixTypeNested>& nestedExpression() const {
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE const internal::remove_all_t<MatrixTypeNested>& nestedExpression()
const {
return m_matrix;
}
/** \returns the nested expression */
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE std::remove_reference_t<MatrixTypeNested>& nestedExpression() {
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE std::remove_reference_t<MatrixTypeNested>& nestedExpression() {
return m_matrix;
}
@@ -114,8 +115,12 @@ class TransposeImpl<MatrixType, Dense> : public internal::TransposeImpl_base<Mat
EIGEN_DENSE_PUBLIC_INTERFACE(Transpose<MatrixType>)
EIGEN_INHERIT_ASSIGNMENT_OPERATORS(TransposeImpl)
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Index innerStride() const { return derived().nestedExpression().innerStride(); }
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Index outerStride() const { return derived().nestedExpression().outerStride(); }
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Index innerStride() const {
return derived().nestedExpression().innerStride();
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Index outerStride() const {
return derived().nestedExpression().outerStride();
}
typedef std::conditional_t<internal::is_lvalue<MatrixType>::value, Scalar, const Scalar> ScalarWithConstIfNotLvalue;
@@ -190,7 +195,7 @@ DenseBase<Derived>::transpose() const {
*
* \sa adjointInPlace(), transpose(), conjugate(), class Transpose, class internal::scalar_conjugate_op */
template <typename Derived>
EIGEN_DEVICE_FUNC inline const typename MatrixBase<Derived>::AdjointReturnType MatrixBase<Derived>::adjoint() const {
EIGEN_DEVICE_FUNC constexpr const typename MatrixBase<Derived>::AdjointReturnType MatrixBase<Derived>::adjoint() const {
return AdjointReturnType(this->transpose());
}