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21 lines
444 B
21 lines
444 B
#include <mcl/gmp_util.hpp>
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#include <cybozu/test.hpp>
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#include <iostream>
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CYBOZU_TEST_AUTO(sqrt)
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{
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const int tbl[] = { 3, 5, 7, 11, 13, 17, 19, 257, 997, 1031 };
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mcl::SquareRoot sq;
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for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
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const mpz_class p = tbl[i];
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sq.set(p);
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for (mpz_class a = 1; a < p; a++) {
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mpz_class x;
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if (sq.get(x, a)) {
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mpz_class y;
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y = (x * x) % p;
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CYBOZU_TEST_EQUAL(a, y);
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}
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}
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}
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}
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