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642 lines
14 KiB
642 lines
14 KiB
#define PUT(x) std::cout << #x "=" << (x) << std::endl
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#include <cybozu/test.hpp>
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#include <cybozu/benchmark.hpp>
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#include <time.h>
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#include <mcl/fp.hpp>
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struct ZnTag;
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typedef mcl::FpT<ZnTag> Zn;
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typedef mcl::FpT<> Fp;
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struct Montgomery {
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typedef mcl::Gmp::Unit Unit;
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mpz_class p_;
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mpz_class R_; // (1 << (pn_ * 64)) % p
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mpz_class RR_; // (R * R) % p
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Unit pp_; // p * pp = -1 mod M = 1 << 64
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size_t pn_;
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Montgomery() {}
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explicit Montgomery(const mpz_class& p)
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{
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p_ = p;
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pp_ = mcl::fp::getMontgomeryCoeff(mcl::Gmp::getUnit(p, 0));
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pn_ = mcl::Gmp::getUnitSize(p);
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R_ = 1;
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R_ = (R_ << (pn_ * 64)) % p_;
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RR_ = (R_ * R_) % p_;
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}
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void toMont(mpz_class& x) const { mul(x, x, RR_); }
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void fromMont(mpz_class& x) const { mul(x, x, 1); }
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void mul(mpz_class& z, const mpz_class& x, const mpz_class& y) const
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{
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#if 0
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const size_t ySize = mcl::Gmp::getUnitSize(y);
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mpz_class c = x * mcl::Gmp::getUnit(y, 0);
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Unit q = mcl::Gmp::getUnit(c, 0) * pp_;
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c += p_ * q;
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c >>= sizeof(Unit) * 8;
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for (size_t i = 1; i < pn_; i++) {
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if (i < ySize) {
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c += x * mcl::Gmp::getUnit(y, i);
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}
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Unit q = mcl::Gmp::getUnit(c, 0) * pp_;
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c += p_ * q;
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c >>= sizeof(Unit) * 8;
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}
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if (c >= p_) {
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c -= p_;
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}
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z = c;
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#else
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z = x * y;
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for (size_t i = 0; i < pn_; i++) {
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Unit q = mcl::Gmp::getUnit(z, 0) * pp_;
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z += p_ * (mp_limb_t)q;
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z >>= sizeof(Unit) * 8;
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}
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if (z >= p_) {
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z -= p_;
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}
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#endif
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}
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};
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template<class T>
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mpz_class getMpz(const T& x)
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{
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std::string str = x.getStr();
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mpz_class t;
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mcl::Gmp::setStr(t, str);
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return t;
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}
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template<class T>
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std::string getStr(const T& x)
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{
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std::ostringstream os;
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os << x;
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return os.str();
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}
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template<class T, class U>
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T castTo(const U& x)
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{
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T t;
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t.setStr(getStr(x));
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return t;
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}
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template<class T>
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void putRaw(const T& x)
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{
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const uint64_t *p = x.getInnerValue();
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for (size_t i = 0, n = T::BlockSize; i < n; i++) {
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printf("%016llx", p[n - 1 - i]);
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}
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printf("\n");
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}
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template<size_t N>
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void put(const uint64_t (&x)[N])
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{
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for (size_t i = 0; i < N; i++) {
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printf("%016llx", x[N - 1 - i]);
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}
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printf("\n");
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}
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struct Test {
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typedef mcl::FpT<> Fp;
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mpz_class m;
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void run(const char *p)
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{
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Fp::setModulo(p);
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m = p;
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Zn::setModulo(p);
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edge();
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cstr();
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getStr();
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setStr();
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stream();
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conv();
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compare();
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modulo();
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ope();
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power();
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power_Zn();
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setArray();
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set64bit();
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bench();
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}
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void cstr()
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{
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const struct {
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const char *str;
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int val;
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} tbl[] = {
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{ "0", 0 },
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{ "1", 1 },
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{ "123", 123 },
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{ "0x123", 0x123 },
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{ "0b10101", 21 },
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};
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
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// string cstr
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Fp x(tbl[i].str);
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CYBOZU_TEST_EQUAL(x, tbl[i].val);
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// int cstr
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Fp y(tbl[i].val);
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CYBOZU_TEST_EQUAL(y, x);
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// copy cstr
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Fp z(x);
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CYBOZU_TEST_EQUAL(z, x);
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// assign int
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Fp w;
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w = tbl[i].val;
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CYBOZU_TEST_EQUAL(w, x);
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// assign self
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Fp u;
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u = w;
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CYBOZU_TEST_EQUAL(u, x);
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// conv
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std::ostringstream os;
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os << tbl[i].val;
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std::string str;
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x.getStr(str);
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CYBOZU_TEST_EQUAL(str, os.str());
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}
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const struct {
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const char *str;
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int val;
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} tbl2[] = {
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{ "-123", 123 },
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{ "-0x123", 0x123 },
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{ "-0b10101", 21 },
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};
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl2); i++) {
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Fp x(tbl2[i].str);
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x = -x;
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CYBOZU_TEST_EQUAL(x, tbl2[i].val);
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}
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}
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void getStr()
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{
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Fp x(0);
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std::string str;
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str = x.getStr();
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CYBOZU_TEST_EQUAL(str, "0");
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str = x.getStr(2, true);
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CYBOZU_TEST_EQUAL(str, "0b0");
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str = x.getStr(2, false);
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CYBOZU_TEST_EQUAL(str, "0");
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str = x.getStr(16, true);
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CYBOZU_TEST_EQUAL(str, "0x0");
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str = x.getStr(16, false);
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CYBOZU_TEST_EQUAL(str, "0");
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x = 123;
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str = x.getStr();
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CYBOZU_TEST_EQUAL(str, "123");
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str = x.getStr(2, true);
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CYBOZU_TEST_EQUAL(str, "0b1111011");
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str = x.getStr(2, false);
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CYBOZU_TEST_EQUAL(str, "1111011");
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str = x.getStr(16, true);
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CYBOZU_TEST_EQUAL(str, "0x7b");
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str = x.getStr(16, false);
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CYBOZU_TEST_EQUAL(str, "7b");
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{
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std::ostringstream os;
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os << x;
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CYBOZU_TEST_EQUAL(os.str(), "123");
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}
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{
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std::ostringstream os;
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os << std::hex << std::showbase << x;
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CYBOZU_TEST_EQUAL(os.str(), "0x7b");
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}
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{
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std::ostringstream os;
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os << std::hex << x;
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CYBOZU_TEST_EQUAL(os.str(), "7b");
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}
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}
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void setStr()
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{
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const struct {
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const char *in;
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int out;
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int base;
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} tbl[] = {
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{ "100", 100, 0 }, // set base = 10 if base = 0
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{ "100", 4, 2 },
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{ "100", 256, 16 },
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{ "0b100", 4, 0 },
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{ "0b100", 4, 2 },
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{ "0x100", 256, 0 },
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{ "0x100", 256, 16 },
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};
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
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Fp x;
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x.setStr(tbl[i].in, tbl[i].base);
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CYBOZU_TEST_EQUAL(x, tbl[i].out);
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}
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// conflict prefix with base
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Fp x;
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CYBOZU_TEST_EXCEPTION(x.setStr("0b100", 16), cybozu::Exception);
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CYBOZU_TEST_EXCEPTION(x.setStr("0x100", 2), cybozu::Exception);
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}
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void stream()
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{
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const struct {
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const char *in;
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int out10;
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int out16;
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} tbl[] = {
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{ "100", 100, 256 }, // set base = 10 if base = 0
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{ "0x100", 256, 256 },
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};
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
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{
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std::istringstream is(tbl[i].in);
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Fp x;
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is >> x;
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CYBOZU_TEST_EQUAL(x, tbl[i].out10);
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}
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{
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std::istringstream is(tbl[i].in);
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Fp x;
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is >> std::hex >> x;
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CYBOZU_TEST_EQUAL(x, tbl[i].out16);
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}
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}
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std::istringstream is("0b100");
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Fp x;
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CYBOZU_TEST_EXCEPTION(is >> std::hex >> x, cybozu::Exception);
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}
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void edge()
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{
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std::cout << std::hex;
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/*
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real mont
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0 0
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1 R^-1
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R 1
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-1 -R^-1
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-R -1
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*/
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mpz_class t = 1;
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const size_t N = Fp::getUnitSize();
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const mpz_class R = (t << (N * mcl::fp::UnitBitSize)) % m;
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const mpz_class tbl[] = {
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0, 1, R, m - 1, m - R
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};
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
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const mpz_class& x = tbl[i];
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for (size_t j = i; j < CYBOZU_NUM_OF_ARRAY(tbl); j++) {
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const mpz_class& y = tbl[j];
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mpz_class z = (x * y) % m;
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Fp xx, yy;
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xx.setMpz(x);
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yy.setMpz(y);
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Fp zz = xx * yy;
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mpz_class t;
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zz.getMpz(t);
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CYBOZU_TEST_EQUAL(z, t);
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}
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}
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std::cout << std::dec;
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}
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void conv()
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{
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const char *bin = "0b100100011010001010110011110001001000000010010001101000101011001111000100100000001001000110100010101100111100010010000";
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const char *hex = "0x123456789012345678901234567890";
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const char *dec = "94522879687365475552814062743484560";
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Fp b(bin);
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Fp h(hex);
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Fp d(dec);
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CYBOZU_TEST_EQUAL(b, h);
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CYBOZU_TEST_EQUAL(b, d);
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std::string str;
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b.getStr(str, 2, true);
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CYBOZU_TEST_EQUAL(str, bin);
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b.getStr(str);
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CYBOZU_TEST_EQUAL(str, dec);
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b.getStr(str, 16, true);
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CYBOZU_TEST_EQUAL(str, hex);
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}
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void compare()
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{
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const struct {
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int lhs;
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int rhs;
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int cmp;
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} tbl[] = {
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{ 0, 0, 0 },
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{ 1, 0, 1 },
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{ 0, 1, -1 },
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{ -1, 0, 1 }, // m-1, 0
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{ 0, -1, -1 }, // 0, m-1
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{ 123, 456, -1 },
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{ 456, 123, 1 },
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{ 5, 5, 0 },
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};
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
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const Fp x(tbl[i].lhs);
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const Fp y(tbl[i].rhs);
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const int cmp = tbl[i].cmp;
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if (cmp == 0) {
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CYBOZU_TEST_EQUAL(x, y);
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} else {
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CYBOZU_TEST_ASSERT(x != y);
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}
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}
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{
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Fp x(1);
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CYBOZU_TEST_ASSERT(x.isOne());
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x = 2;
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CYBOZU_TEST_ASSERT(!x.isOne());
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}
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{
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const struct {
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int v;
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bool expected;
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} tbl[] = {
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{ 0, false },
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{ 1, false },
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{ -1, true },
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};
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
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Fp x = tbl[i].v;
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PUT(x);
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CYBOZU_TEST_EQUAL(x.isNegative(), tbl[i].expected);
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}
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std::string str;
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Fp::getModulo(str);
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mpz_class half(str);
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half = (half - 1) / 2;
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Fp x;
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x.setMpz(half - 1);
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CYBOZU_TEST_ASSERT(!x.isNegative());
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x.setMpz(half);
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CYBOZU_TEST_ASSERT(!x.isNegative());
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x.setMpz(half + 1);
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CYBOZU_TEST_ASSERT(x.isNegative());
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}
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}
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void modulo()
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{
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std::ostringstream ms;
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ms << m;
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std::string str;
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Fp::getModulo(str);
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CYBOZU_TEST_EQUAL(str, ms.str());
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}
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void ope()
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{
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const struct {
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Zn x;
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Zn y;
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Zn add; // x + y
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Zn sub; // x - y
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Zn mul; // x * y
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Zn sqr; // x * x
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} tbl[] = {
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{ 0, 1, 1, -1, 0, 0 },
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{ 9, 7, 16, 2, 63, 81 },
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{ 10, 13, 23, -3, 130, 100 },
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{ 2000, -1000, 1000, 3000, -2000000, 4000000 },
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{ -12345, -9999, -(12345 + 9999), - 12345 + 9999, 12345 * 9999, 12345 * 12345 },
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};
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
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const Fp x(castTo<Fp>(tbl[i].x));
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const Fp y(castTo<Fp>(tbl[i].y));
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Fp z;
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Fp::add(z, x, y);
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CYBOZU_TEST_EQUAL(z, castTo<Fp>(tbl[i].add));
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Fp::sub(z, x, y);
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CYBOZU_TEST_EQUAL(z, castTo<Fp>(tbl[i].sub));
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Fp::mul(z, x, y);
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CYBOZU_TEST_EQUAL(z, castTo<Fp>(tbl[i].mul));
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Fp r;
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Fp::inv(r, y);
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Zn rr = 1 / tbl[i].y;
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CYBOZU_TEST_EQUAL(r, castTo<Fp>(rr));
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Fp::mul(z, z, r);
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CYBOZU_TEST_EQUAL(z, castTo<Fp>(tbl[i].x));
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z = x + y;
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CYBOZU_TEST_EQUAL(z, castTo<Fp>(tbl[i].add));
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z = x - y;
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CYBOZU_TEST_EQUAL(z, castTo<Fp>(tbl[i].sub));
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z = x * y;
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CYBOZU_TEST_EQUAL(z, castTo<Fp>(tbl[i].mul));
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Fp::square(z, x);
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CYBOZU_TEST_EQUAL(z, castTo<Fp>(tbl[i].sqr));
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z = x / y;
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z *= y;
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CYBOZU_TEST_EQUAL(z, castTo<Fp>(tbl[i].x));
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}
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}
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void power()
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{
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Fp x, y, z;
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x = 12345;
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z = 1;
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for (int i = 0; i < 100; i++) {
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Fp::power(y, x, i);
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CYBOZU_TEST_EQUAL(y, z);
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z *= x;
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}
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}
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void power_Zn()
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{
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Fp x, y, z;
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x = 12345;
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z = 1;
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for (int i = 0; i < 100; i++) {
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Fp::power(y, x, Zn(i));
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CYBOZU_TEST_EQUAL(y, z);
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z *= x;
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}
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}
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void setArray()
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{
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// QQQ
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#if 0
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char b1[] = { 0x56, 0x34, 0x12 };
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Fp x;
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x.setArray(b1, 3);
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CYBOZU_TEST_EQUAL(x, 0x123456);
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int b2[] = { 0x12, 0x34 };
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x.setArray(b2, 2);
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CYBOZU_TEST_EQUAL(x, Fp("0x3400000012"));
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#endif
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}
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void set64bit()
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{
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const struct {
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const char *p;
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int64_t i;
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} tbl[] = {
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{ "0x1234567812345678", uint64_t(0x1234567812345678ull) },
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{ "0x1234567812345678", int64_t(0x1234567812345678ll) },
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};
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
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Fp x(tbl[i].p);
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Fp y(tbl[i].i);
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if (tbl[i].i < 0) x = -x;
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CYBOZU_TEST_EQUAL(x, y);
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}
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}
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void bench()
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{
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Fp x("-123456789");
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Fp y("-0x7ffffffff");
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CYBOZU_BENCH("add", operator+, x, x);
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CYBOZU_BENCH("sub", operator-, x, y);
|
|
CYBOZU_BENCH("mul", operator*, x, x);
|
|
CYBOZU_BENCH("sqr", Fp::square, x, x);
|
|
CYBOZU_BENCH("div", y += x; operator/, x, y);
|
|
}
|
|
};
|
|
|
|
void customTest(const char *pStr, const char *xStr, const char *yStr)
|
|
{
|
|
#if 0
|
|
{
|
|
pStr = "0xfffffffffffffffffffffffffffffffffffffffeffffee37",
|
|
Fp::setModulo(pStr);
|
|
static uint64_t x[3] = { 1, 0, 0 };
|
|
uint64_t z[3];
|
|
std::cout<<std::hex;
|
|
Fp::inv(*(Fp*)z, *(const Fp*)x);
|
|
put(z);
|
|
exit(1);
|
|
}
|
|
#endif
|
|
#if 0
|
|
std::cout << std::hex;
|
|
uint64_t x[9] = { 0xff7fffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x1ff };
|
|
uint64_t y[9] = { 0xff7fffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x1ff };
|
|
uint64_t z1[9], z2[9];
|
|
Fp::setModulo(pStr);
|
|
Fp::fg_.mul_(z2, x, y);
|
|
put(z2);
|
|
{
|
|
puts("C");
|
|
mpz_class p(pStr);
|
|
Montgomery mont(p);
|
|
mpz_class xx, yy;
|
|
mcl::Gmp::setArray(xx, x, CYBOZU_NUM_OF_ARRAY(x));
|
|
mcl::Gmp::setArray(yy, y, CYBOZU_NUM_OF_ARRAY(y));
|
|
mpz_class z;
|
|
mont.mul(z, xx, yy);
|
|
std::cout << std::hex << z << std::endl;
|
|
}
|
|
exit(1);
|
|
#else
|
|
std::string rOrg, rC, rAsm;
|
|
Zn::setModulo(pStr);
|
|
Zn s(xStr), t(yStr);
|
|
s *= t;
|
|
rOrg = getStr(s);
|
|
{
|
|
puts("C");
|
|
mpz_class p(pStr);
|
|
Montgomery mont(p);
|
|
mpz_class x(xStr), y(yStr);
|
|
mont.toMont(x);
|
|
mont.toMont(y);
|
|
mpz_class z;
|
|
mont.mul(z, x, y);
|
|
mont.fromMont(z);
|
|
rC = getStr(z);
|
|
}
|
|
|
|
puts("asm");
|
|
Fp::setModulo(pStr);
|
|
Fp x(xStr), y(yStr);
|
|
x *= y;
|
|
rAsm = getStr(x);
|
|
CYBOZU_TEST_EQUAL(rOrg, rC);
|
|
CYBOZU_TEST_EQUAL(rOrg, rAsm);
|
|
#endif
|
|
}
|
|
|
|
CYBOZU_TEST_AUTO(customTest)
|
|
{
|
|
const struct {
|
|
const char *p;
|
|
const char *x;
|
|
const char *y;
|
|
} tbl[] = {
|
|
{
|
|
"0x1ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
|
|
// "0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff",
|
|
// "0xfffffffffffffffffffffffffffffffffffffffeffffee37",
|
|
"0x1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe",
|
|
"0x1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe"
|
|
},
|
|
};
|
|
for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
|
|
customTest(tbl[i].p, tbl[i].x, tbl[i].y);
|
|
}
|
|
}
|
|
|
|
CYBOZU_TEST_AUTO(test)
|
|
{
|
|
Test test;
|
|
const char *tbl[] = {
|
|
// N = 3
|
|
"0x000000000000000100000000000000000000000000000033", // min prime
|
|
"0x00000000fffffffffffffffffffffffffffffffeffffac73",
|
|
"0x0000000100000000000000000001b8fa16dfab9aca16b6b3",
|
|
"0x000000010000000000000000000000000000000000000007",
|
|
"0x30000000000000000000000000000000000000000000002b",
|
|
"0x70000000000000000000000000000000000000000000001f",
|
|
"0x800000000000000000000000000000000000000000000005",
|
|
"0xfffffffffffffffffffffffffffffffffffffffeffffee37",
|
|
"0xfffffffffffffffffffffffe26f2fc170f69466a74defd8d",
|
|
"0xffffffffffffffffffffffffffffffffffffffffffffff13", // max prime
|
|
|
|
// N = 4
|
|
"0x0000000000000001000000000000000000000000000000000000000000000085", // min prime
|
|
"0x2523648240000001ba344d80000000086121000000000013a700000000000013",
|
|
"0x7523648240000001ba344d80000000086121000000000013a700000000000017",
|
|
"0x800000000000000000000000000000000000000000000000000000000000005f",
|
|
"0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff43", // max prime
|
|
|
|
// N = 6
|
|
"0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff",
|
|
|
|
// N = 9
|
|
"0x1ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
|
|
};
|
|
for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
|
|
printf("prime=%s\n", tbl[i]);
|
|
test.run(tbl[i]);
|
|
}
|
|
}
|
|
|