Squashed 'src/snark/' content from commit 9ada3f8

git-subtree-dir: src/snark
git-subtree-split: 9ada3f84ab484c57b2247c2f41091fd6a0916573

src/algebra/fields/field_utils.hpp

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+/** @file
+ *****************************************************************************
+ * @author     This file is part of libsnark, developed by SCIPR Lab
+ *             and contributors (see AUTHORS).
+ * @copyright  MIT license (see LICENSE file)
+ *****************************************************************************/
+
+#ifndef FIELD_UTILS_HPP_
+#define FIELD_UTILS_HPP_
+#include <cstdint>
+
+#include "common/utils.hpp"
+#include "algebra/fields/bigint.hpp"
+
+namespace libsnark {
+
+// returns root of unity of order n (for n a power of 2), if one exists
+template<typename FieldT>
+FieldT get_root_of_unity(const size_t n);
+
+template<typename FieldT>
+std::vector<FieldT> pack_int_vector_into_field_element_vector(const std::vector<size_t> &v, const size_t w);
+
+template<typename FieldT>
+std::vector<FieldT> pack_bit_vector_into_field_element_vector(const bit_vector &v, const size_t chunk_bits);
+
+template<typename FieldT>
+std::vector<FieldT> pack_bit_vector_into_field_element_vector(const bit_vector &v);
+
+template<typename FieldT>
+std::vector<FieldT> convert_bit_vector_to_field_element_vector(const bit_vector &v);
+
+template<typename FieldT>
+bit_vector convert_field_element_vector_to_bit_vector(const std::vector<FieldT> &v);
+
+template<typename FieldT>
+bit_vector convert_field_element_to_bit_vector(const FieldT &el);
+
+template<typename FieldT>
+bit_vector convert_field_element_to_bit_vector(const FieldT &el, const size_t bitcount);
+
+template<typename FieldT>
+FieldT convert_bit_vector_to_field_element(const bit_vector &v);
+
+template<typename FieldT>
+void batch_invert(std::vector<FieldT> &vec);
+
+} // libsnark
+#include "algebra/fields/field_utils.tcc"
+
+#endif // FIELD_UTILS_HPP_