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78 lines
1.8 KiB
78 lines
1.8 KiB
#include <cln/number.h>
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#include <cln/io.h>
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#include <cln/integer.h>
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#include <cln/integer_io.h>
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#include <cln/modinteger.h>
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#include <cln/numtheory.h>
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#include <cstdlib>
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#include <cstring>
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#include <cln/timing.h>
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using namespace cln;
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int main (int argc, char * argv[])
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{
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int repetitions = 1;
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if ((argc >= 3) && !strcmp(argv[1],"-r")) {
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repetitions = atoi(argv[2]);
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argc -= 2; argv += 2;
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}
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if (argc < 2)
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exit(1);
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cl_I len = cl_I(argv[1]);
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int e = (argc > 2 ? atoi(argv[2]) : 0);
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if (e < 1)
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e = 1;
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if (len <= e)
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exit(0);
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cl_I p;
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do {
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p = ((random_I((cl_I)1 << (len-1-e))*2+1) << e) + 1;
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} while (!isprobprime(p));
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cout << "p = " << p << endl;
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cl_modint_ring R = find_modint_ring(p);
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cl_MI x = R->random();
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cl_MI a = square(x);
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sqrt_mod_p_t sol;
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#if 0
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extern int cl_sqrt_algo;
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cl_sqrt_algo = 1;
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{ CL_TIMING;
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for (int rep = repetitions; rep > 0; rep--)
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{ sol = sqrt_mod_p(R,a); }
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}
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if (sol.condition)
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cerr << "p not prime!" << endl;
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else {
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if (sol.solutions == 0)
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cerr << "No sqrt found!" << endl;
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if (!(sol.solution[0] == x || sol.solution[0] == -x))
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cerr << "Wrong result!" << endl;
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}
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cl_sqrt_algo = 2;
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{ CL_TIMING;
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for (int rep = repetitions; rep > 0; rep--)
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{ sol = sqrt_mod_p(R,a); }
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}
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if (sol.condition)
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cerr << "p not prime!" << endl;
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else {
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if (sol.solutions == 0)
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cerr << "No sqrt found!" << endl;
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if (!(sol.solution[0] == x || sol.solution[0] == -x))
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cerr << "Wrong result!" << endl;
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}
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cl_sqrt_algo = 3;
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#endif
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{ CL_TIMING;
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for (int rep = repetitions; rep > 0; rep--)
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{ sol = sqrt_mod_p(R,a); }
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}
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if (sol.condition)
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cerr << "p not prime!" << endl;
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else {
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if (sol.solutions == 0)
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cerr << "No sqrt found!" << endl;
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if (!(sol.solution[0] == x || sol.solution[0] == -x))
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cerr << "Wrong result!" << endl;
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}
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}
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