Program Listing for File bigintbackend.h
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//==================================================================================
// BSD 2-Clause License
//
// Copyright (c) 2014-2023, NJIT, Duality Technologies Inc. and other contributors
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// Author TPOC: contact@openfhe.org
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//==================================================================================
#ifndef __BIGINTBACKEND_H__
#define __BIGINTBACKEND_H__
#include "config_core.h"
#include "math/hal/bigintfxd/backendfxd.h"
#include "math/hal/bigintdyn/backenddyn.h"
#include "math/hal/bigintntl/backendntl.h"
namespace bigintbackend {
// Each math backend is defined in its own namespace, and can be used at any
// time by referencing the objects in its namespace
// Selecting a math backend by defining MATHBACKEND means defining which
// underlying implementation is the default BigInteger and BigVector
#if MATHBACKEND == 2
// Uses bigintfxd:: definition as default
// Implemented as an array of integers
// Configurable maximum bit length and type of underlying integer
using BigInteger = M2Integer;
using BigVector = M2Vector;
#elif MATHBACKEND == 4
// This uses bigintdyn:: definition as default
// This backend supports arbitrary bitwidths; no memory pool is
// used; can grow up to RAM limitation
// Configurable type of underlying integer (either 32 or 64 bit)
using BigInteger = M4Integer;
using BigVector = M4Vector;
#elif MATHBACKEND == 6
// This uses bigintntl:: definition as default
// GMP 6.1.2 / NTL 10.3.0 backend
using BigInteger = M6Integer;
using BigVector = M6Vector;
#else
#error "Configuration Error: MATHBACKEND value not 2, 4, or 6"
#endif
} // namespace bigintbackend
#endif // __BIGINTBACKEND_H__