KOKO\Mimi
65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
#ifndef FESA_MATH_VECTOR_H_
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#define FESA_MATH_VECTOR_H_
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#include <cstddef>
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#include <vector>
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namespace fesa {
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/// @brief Owns a contiguous dense vector while keeping MKL private.
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class Vector {
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public:
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/// @brief Constructs a vector with all entries initialized to one value.
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explicit Vector(std::size_t size, double value = 0.0);
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/// @brief Copies vector values into independent contiguous storage.
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Vector(const Vector& other);
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/// @brief Moves vector storage and leaves other empty.
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Vector(Vector&& other) noexcept;
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/// @brief Copies vector values into independent contiguous storage.
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Vector& operator=(const Vector& other);
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/// @brief Moves vector storage and leaves other empty.
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Vector& operator=(Vector&& other) noexcept;
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/// @brief Returns the number of entries.
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std::size_t Size() const noexcept;
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/// @brief Returns mutable contiguous storage.
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double* Data() noexcept;
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/// @brief Returns immutable contiguous storage.
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const double* Data() const noexcept;
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/// @brief Returns a bounds-checked mutable entry.
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/// @throws std::out_of_range if index is outside the vector.
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double& operator[](std::size_t index);
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/// @brief Returns a bounds-checked immutable entry.
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/// @throws std::out_of_range if index is outside the vector.
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const double& operator[](std::size_t index) const;
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/// @brief Computes the Euclidean dot product with rhs.
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/// @throws std::invalid_argument if the vector sizes differ.
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double Dot(const Vector& rhs) const;
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/// @brief Computes the Euclidean norm.
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double Norm() const;
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/// @brief Scales each entry by alpha through the dense backend.
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void Scale(double alpha);
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/// @brief Accumulates alpha times x into this vector.
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/// @throws std::invalid_argument if the vector sizes differ.
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void Axpy(double alpha, const Vector& x);
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private:
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std::vector<double> values_;
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};
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} // namespace fesa
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#endif // FESA_MATH_VECTOR_H_
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