Function ordered_coefficients

code/math/linear_program_io.cpp:77–99

#ifdef SORT_VARIABLES_IN_INCREASING_ORDER

	std::vector<std::pair<int, double>> ordered_coefficients(const LinearExpression* expr, bool increasing_order /* = true*/) {
		std::vector<std::pair<int, double>> coeffs(expr->coefficients().begin(), expr->coefficients().end());

		// it is possible to make the order an parameter when constructing SortObj, but this is a bit more efficient 
		if (increasing_order) {
			struct SortIncreasing {
				bool operator()(const std::pair<int, double>& a, const std::pair<int, double>& b) {
					return a.first < b.first;
				}
			};
			std::sort(coeffs.begin(), coeffs.end(), SortIncreasing());
		}
		else {
			struct SortDecreasing {
				bool operator()(const std::pair<int, double>& a, const std::pair<int, double>& b) {
					return a.first > b.first;
				}
			};
			std::sort(coeffs.begin(), coeffs.end(), SortDecreasing());
		}

		return coeffs;
	}
#endif

}