gadgetlib2::R1P_EqualsConst_Gadget Class Reference

#include <gadget.hpp>

Inheritance diagram for gadgetlib2::R1P_EqualsConst_Gadget:

Collaboration diagram for gadgetlib2::R1P_EqualsConst_Gadget:

Public Member Functions
void	generateConstraints ()
void	generateWitness ()
Public Member Functions inherited from gadgetlib2::R1P_Gadget
	R1P_Gadget (ProtoboardPtr pb)
virtual	~R1P_Gadget ()=0
virtual void	addRank1Constraint (const LinearCombination &a, const LinearCombination &b, const LinearCombination &c, const ::std::string &name)
Public Member Functions inherited from gadgetlib2::Gadget
	Gadget (ProtoboardPtr pb)
void	addUnaryConstraint (const LinearCombination &a, const ::std::string &name)
void	addRank1Constraint (const LinearCombination &a, const LinearCombination &b, const LinearCombination &c, const ::std::string &name)
void	enforceBooleanity (const Variable &var)
FElem &	val (const Variable &var)
FElem	val (const LinearCombination &lc)
FieldType	fieldType () const
bool	flagIsSet (const FlagVariable &flag) const

Public Attributes
const LinearCombination	input_
const Variable	result_

Friends
class	EqualsConst_Gadget

Additional Inherited Members
Protected Attributes inherited from gadgetlib2::Gadget
ProtoboardPtr	pb_

Detailed Description

Definition at line 567 of file gadget.hpp.

Member Function Documentation

generateConstraints()

void gadgetlib2::R1P_EqualsConst_Gadget::generateConstraints ( )

virtual

Implements gadgetlib2::Gadget.

Definition at line 806 of file gadget.cpp.

{
    addRank1Constraint(input_ - n_, result_, 0, "(input - n) * result = 0");
    addRank1Constraint(
        input_ - n_, aux_, 1 - result_, "(input - n) * aux = 1 - result");
}

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generateWitness()

void gadgetlib2::R1P_EqualsConst_Gadget::generateWitness ( )

virtual

Reimplemented from gadgetlib2::Gadget.

Definition at line 813 of file gadget.cpp.

{
    val(aux_) = val(input_) == n_ ? 0 : (val(input_) - n_).inverse(R1P);
    val(result_) = val(input_) == n_ ? 1 : 0;
}

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Friends And Related Function Documentation

EqualsConst_Gadget

friend class EqualsConst_Gadget

friend

Definition at line 586 of file gadget.hpp.

Member Data Documentation

input_

const LinearCombination gadgetlib2::R1P_EqualsConst_Gadget::input_

Definition at line 582 of file gadget.hpp.

result_

const Variable gadgetlib2::R1P_EqualsConst_Gadget::result_

Definition at line 583 of file gadget.hpp.

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The documentation for this class was generated from the following files:

• /home/runner/work/libsnark/libsnark/libsnark/gadgetlib2/gadget.hpp
• /home/runner/work/libsnark/libsnark/libsnark/gadgetlib2/gadget.cpp