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75 lines
1.8 KiB
75 lines
1.8 KiB
/*
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sudo cpufreq-set -c 0 -g performance
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mycl karatsuba.cpp -DMCL_USE_LLVM=1 ../lib/libmcl.a && ./a.out
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*/
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#include <stdio.h>
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#include <mcl/fp.hpp>
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#include <cybozu/xorshift.hpp>
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#include "../src/fp_proto.hpp"
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#include "../src/fp_llvm.hpp"
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#include <cybozu/test.hpp>
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#include <cybozu/benchmark.hpp>
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typedef mcl::FpT<> Fp;
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using namespace mcl::fp;
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void dump(const Unit *x, size_t N)
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{
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for (size_t i = 0; i < N; i++) {
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printf("%016llx ", (long long)x[N - 1 - i]);
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}
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printf("\n");
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}
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void gggKara(uint64_t *z, const uint64_t *x, const uint64_t *y)
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{
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MulPre<6, Gtag>::karatsuba(z, x, y);
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}
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void gggLLVM(uint64_t *z, const uint64_t *x, const uint64_t *y)
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{
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MulPre<6, Ltag>::f(z, x, y);
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}
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template<size_t N>
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void benchKaratsuba()
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{
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cybozu::XorShift rg;
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printf("N=%d\n", (int)N);
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Unit x[N], z[N * 2];
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rg.read(x, N);
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rg.read(z, N);
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CYBOZU_BENCH("gmp ", (MulPre<N, Gtag>::f), z, z, x);
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CYBOZU_BENCH("gmp-k ", (MulPre<N, Gtag>::karatsuba), z, z, x);
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CYBOZU_BENCH("llvm ", (MulPre<N, Ltag>::f), z, z, x);
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CYBOZU_BENCH("llvm-k", (MulPre<N, Ltag>::karatsuba), z, z, x);
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}
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CYBOZU_TEST_AUTO(karatsuba)
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{
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benchKaratsuba<4>();
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benchKaratsuba<6>();
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benchKaratsuba<8>();
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#if MCL_MAX_OP_BIT_SIZE == 768
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benchKaratsuba<10>();
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benchKaratsuba<12>();
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#endif
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}
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CYBOZU_TEST_AUTO(mulPre)
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{
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cybozu::XorShift rg;
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// const char *p = "0x2523648240000001ba344d80000000086121000000000013a700000000000013";
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// const char *p = "0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff";
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// Fp::init(p, mcl::fp::FP_LLVM);
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// const mcl::fp::Op& op = Fp::getOp();
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const size_t N = 10;
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Unit x[N], y[N], z[N * 2], w[N * 2];
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for (int i = 0; i < 10; i++) {
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rg.read(x, N);
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rg.read(y, N);
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mpn_mul_n((mp_limb_t*)z, (const mp_limb_t*)x, (const mp_limb_t*)y, N);
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MulPre<N, Gtag>::karatsuba(w, x, y);
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CYBOZU_TEST_EQUAL_ARRAY(z, w, N * 2);
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}
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}
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