diff options
author | Benoit Steiner <benoit.steiner.goog@gmail.com> | 2015-08-31 08:18:53 -0700 |
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committer | Benoit Steiner <benoit.steiner.goog@gmail.com> | 2015-08-31 08:18:53 -0700 |
commit | f41831e445f3fdd9dc324561135b2a19eafd9a56 (patch) | |
tree | 045cb917d62685b342ce129e384e03e63c916898 /unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h | |
parent | 2ab603316af7c1bcf1d5e87d9ba50a2589b36e37 (diff) |
Added support for argmax/argmin
Diffstat (limited to 'unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h')
-rw-r--r-- | unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h b/unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h index 78feb85cd..7dfa04760 100644 --- a/unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h +++ b/unsupported/Eigen/CXX11/src/Tensor/TensorMeta.h @@ -31,6 +31,60 @@ template <> struct max_n_1<0> { static const size_t size = 1; }; + + + +#if defined(EIGEN_HAS_CONSTEXPR) +#define EIGEN_CONSTEXPR constexpr +#else +#define EIGEN_CONSTEXPR +#endif + +// Tuple mimics std::pair but works on e.g. nvcc. +template <typename U, typename V> struct Tuple { + public: + U first; + V second; + + typedef U first_type; + typedef V second_type; + + EIGEN_CONSTEXPR EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + Tuple() : first(), second() {} + + EIGEN_CONSTEXPR EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + Tuple(const U& f, const V& s) : first(f), second(s) {} + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + Tuple& operator= (const Tuple& rhs) { + if (&rhs == this) return *this; + first = rhs.first; + second = rhs.second; + return *this; + } + + EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE + void swap(Tuple& rhs) { + using numext::swap; + swap(first, rhs.first); + swap(second, rhs.second); + } +}; + +template <typename U, typename V> +EIGEN_CONSTEXPR EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE +bool operator==(const Tuple<U, V>& x, const Tuple<U, V>& y) { + return (x.first == y.first && x.second == y.second); +} + +template <typename U, typename V> +EIGEN_CONSTEXPR EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE +bool operator!=(const Tuple<U, V>& x, const Tuple<U, V>& y) { + return !(x == y); +} + +#undef EIGEN_CONSTEXPR + } // namespace Eigen #endif // EIGEN_CXX11_TENSOR_TENSOR_META_H |