ecc_transcript_msm_transition_short_relation.hpp

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// === AUDIT STATUS ===
// internal:    { status: Planned, auditors: [], commit: }
// external_1:  { status: not started, auditors: [], commit: }
// external_2:  { status: not started, auditors: [], commit: }
// =====================
 
#pragma once
 
#include "barretenberg/relations/ecc_vm/ecc_short_monomial_relation_utils.hpp"
#include "barretenberg/relations/ecc_vm/ecc_transcript_relation.hpp"
#include "barretenberg/relations/relation_types.hpp"
 
namespace bb {
 
template <typename FF_> class ECCVMTranscriptMsmTransitionShortRelationImpl {
  public:
    using FF = FF_;
 
    // Local subrelation indices; map in order onto base transcript subrelations 27..31.
    enum SubrelationIndex : size_t {
        OFFSET_GENERATOR_X = 0,
        OFFSET_GENERATOR_Y = 1,
        MSM_INFINITY_X_DIFF = 2,
        MSM_INFINITY_Y_SUM = 3,
        MSM_INFINITY_INVERSE = 4,
        NUM_SUBRELATIONS,
    };
 
    static constexpr std::array<size_t, 5> SUBRELATION_PARTIAL_LENGTHS{
        6, // OFFSET_GENERATOR_X (deg 5)
        6, // OFFSET_GENERATOR_Y (deg 5)
        4, // MSM_INFINITY_X_DIFF (deg 3)
        4, // MSM_INFINITY_Y_SUM (deg 3)
        5, // MSM_INFINITY_INVERSE (deg 4)
    };
    static_assert(NUM_SUBRELATIONS == SUBRELATION_PARTIAL_LENGTHS.size());
 
    template <typename AllEntities> inline static bool skip(const AllEntities& in)
    {
        return in.transcript_msm_transition.is_zero();
    }
 
    template <typename ContainerOverSubrelations, typename AllEntities, typename Parameters>
    static void accumulate(ContainerOverSubrelations& accumulator,
                           const AllEntities& in,
                           const Parameters& params,
                           const FF& scaling_factor);
};
 
template <typename FF>
using ECCVMTranscriptMsmTransitionShortRelation = Relation<ECCVMTranscriptMsmTransitionShortRelationImpl<FF>>;
 
} // namespace bb