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Paddle/paddle/framework/ddim.h

105 lines
2.0 KiB

#pragma once
#include <boost/variant.hpp>
#include <initializer_list>
#include <stdexcept>
#include <vector>
#include "paddle/framework/dim.h"
namespace paddle {
namespace framework {
namespace {
typedef boost::variant<Dim<1>, Dim<2>, Dim<3>, Dim<4>, Dim<5>, Dim<6>, Dim<7>,
Dim<8>, Dim<9>>
DDimVar;
}
/**
* \brief A dynamically sized dimension.
*
* The number of dimensions must be between [1, 9].
*/
struct DDim {
DDimVar var;
DDim() : var(Dim<1>()) {}
template <int D>
DDim(const Dim<D>& in) : var(in) {}
template <int D>
DDim& operator=(const Dim<D>& in) {
var = in;
return *this;
}
int& operator[](int idx);
int operator[](int idx) const;
template <typename Visitor>
typename Visitor::result_type apply_visitor(Visitor& visitor) {
return var.apply_visitor(visitor);
}
template <typename Visitor>
typename Visitor::result_type apply_visitor(Visitor& visitor) const {
return var.apply_visitor(visitor);
}
DDimVar getVar() { return var; }
bool operator==(DDim d) const;
bool operator!=(DDim d) const;
DDim operator+(DDim d) const;
DDim operator*(DDim d) const;
};
/**
* \brief Make a DDim from std::vector<int>
*
* \param dims An vector of ints. Must be sized between [1, 9]
*/
DDim make_ddim(const std::vector<int>& dims);
/**
* \brief Make a DDim from an initializer list
*
* \param dims An initializer list of ints. Must be sized between [1, 9]
*
*/
DDim make_ddim(std::initializer_list<int> dims);
int get(const DDim& dim, int idx);
void set(DDim& dim, int idx, int val);
std::vector<int> vectorize(const DDim& ddim);
ssize_t product(const DDim& ddim);
/**
* \brief What is the length of this dimension?
*
* \param Dynamic dimension to inspect
*/
int arity(const DDim& ddim);
std::ostream& operator<<(std::ostream&, const DDim&);
} // namespace framework
} // namespace paddle
namespace boost {
template <typename T>
T get(const paddle::framework::DDim& in) {
return boost::get<T>(in.var);
}
} // namespace boost