Exemplo n.º 1
0
/*
 * Tests: one buffer
 * - n = bitsize
 */
static void test1(uint32_t n) {
  bvarith_buffer_t buffer;
  uint32_t q0[4];

  assert(0 < n && n <= 128);

  init_bvarith_buffer(&buffer, &prod_table, &store);
  bvarith_buffer_prepare(&buffer, n);
  printf("Empty buffer\n");
  test_buffer(&buffer);

  printf("x_0 + x_1\n");
  bvarith_buffer_add_var(&buffer, 0);
  bvarith_buffer_add_var(&buffer, 1);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("After reset\n");
  bvarith_buffer_prepare(&buffer, n);
  test_buffer(&buffer);

  printf("x_2 - x_0\n");
  bvarith_buffer_add_var(&buffer, 2);
  bvarith_buffer_sub_var(&buffer, 0);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("x_2 - x_0 + x_1 + x_0\n");
  bvarith_buffer_prepare(&buffer, n);
  bvarith_buffer_add_var(&buffer, 2);
  bvarith_buffer_sub_var(&buffer, 0);
  bvarith_buffer_add_var(&buffer, 1);
  bvarith_buffer_add_var(&buffer, 0);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("Adding 3\n");
  bvconst_set32(q0, 4, 3);
  bvarith_buffer_add_const(&buffer, q0);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("Negating\n");
  bvarith_buffer_negate(&buffer);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("Negating again\n");
  bvarith_buffer_negate(&buffer);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("Multiplying by 2 x_4\n");
  bvconst_set32(q0, 4, 2);
  bvarith_buffer_mul_varmono(&buffer, q0, 4);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("Multiplying by x_1^2\n");
  bvarith_buffer_mul_var(&buffer, 1);
  bvarith_buffer_mul_var(&buffer, 1);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("Multiplying by 0\n");
  bvconst_clear(q0, 4);
  bvarith_buffer_mul_const(&buffer, q0);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("x_1 + 1 - x_2\n");
  bvarith_buffer_prepare(&buffer, n);
  bvarith_buffer_add_var(&buffer, 1);
  bvconst_set32(q0, 4, 1);
  bvarith_buffer_add_const(&buffer, q0);
  bvarith_buffer_sub_var(&buffer, 2);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("Squaring\n");
  bvarith_buffer_square(&buffer);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("Squaring\n");
  bvarith_buffer_square(&buffer);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  printf("Squaring\n");
  bvarith_buffer_square(&buffer);
  bvarith_buffer_normalize(&buffer);
  test_buffer(&buffer);

  delete_bvarith_buffer(&buffer);
}
Exemplo n.º 2
0
int main(void) {
  thvar_t x, y, z;

  init_bvconstants();
  init_bv_vartable(&vtbl);
  init_bvexp_table(&table, &vtbl);
  bvexp_init_buffer64(&table, &b1);
  bvexp_init_buffer64(&table, &b2);
  bvexp_init_buffer(&table, &c1);
  bvexp_init_buffer(&table, &c2);

  printf("=== Initial table ===\n");
  print_bvexp_table(stdout, &table);
  printf("\n");

  x = make_bvvar(&vtbl, 10);
  y = make_bvvar(&vtbl, 10);
  z = make_bvvar(&vtbl, 10);

  // 2 + x + y
  bvarith64_buffer_prepare(&b1, 10);
  bvarith64_buffer_add_const(&b1, 2);
  bvarith64_buffer_add_var(&b1, x);
  bvarith64_buffer_add_var(&b1, y);
  bvarith64_buffer_normalize(&b1);
  test_buffer64(&table, &b1);

  bvarith64_buffer_prepare(&b1, 10);
  bvarith64_buffer_add_const(&b1, 2);
  bvarith64_buffer_add_var(&b1, x);
  bvarith64_buffer_add_var(&b1, y);
  bvarith64_buffer_normalize(&b1);
  test_buffer64(&table, &b1);

  // (x + z) * (y - z)
  bvarith64_buffer_prepare(&b1, 10);
  bvarith64_buffer_add_var(&b1, x);
  bvarith64_buffer_add_var(&b1, z);
  bvarith64_buffer_prepare(&b2, 10);
  bvarith64_buffer_add_var(&b2, y);
  bvarith64_buffer_sub_var(&b2, z);
  bvarith64_buffer_mul_buffer(&b1, &b2);
  bvarith64_buffer_normalize(&b1);
  test_buffer64(&table, &b1);

  bvarith64_buffer_prepare(&b1, 10);
  bvarith64_buffer_add_var(&b1, x);
  bvarith64_buffer_add_var(&b1, z);
  bvarith64_buffer_prepare(&b2, 10);
  bvarith64_buffer_add_var(&b2, y);
  bvarith64_buffer_sub_var(&b2, z);
  bvarith64_buffer_mul_buffer(&b1, &b2);
  bvarith64_buffer_normalize(&b1);
  test_buffer64(&table, &b1);

  // x * y * z^2
  bvarith64_buffer_prepare(&b1, 10);
  bvarith64_buffer_add_var(&b1, z);
  bvarith64_buffer_square(&b1);
  bvarith64_buffer_mul_var(&b1, y);
  bvarith64_buffer_mul_var(&b1, x);
  bvarith64_buffer_normalize(&b1);
  test_buffer64(&table, &b1);

  bvarith64_buffer_prepare(&b1, 10);
  bvarith64_buffer_add_var(&b1, z);
  bvarith64_buffer_square(&b1);
  bvarith64_buffer_mul_var(&b1, y);
  bvarith64_buffer_mul_var(&b1, x);
  bvarith64_buffer_normalize(&b1);
  test_buffer64(&table, &b1);


  // Large coefficients
  x = make_bvvar(&vtbl, 100);
  y = make_bvvar(&vtbl, 100);
  z = make_bvvar(&vtbl, 100);


  // 1 + x + y
  bvarith_buffer_prepare(&c1, 100);
  bvarith_buffer_set_one(&c1);
  bvarith_buffer_add_var(&c1, x);
  bvarith_buffer_add_var(&c1, y);
  bvarith_buffer_normalize(&c1);
  test_buffer(&table, &c1);

  bvarith_buffer_prepare(&c1, 100);
  bvarith_buffer_set_one(&c1);
  bvarith_buffer_add_var(&c1, x);
  bvarith_buffer_add_var(&c1, y);
  bvarith_buffer_normalize(&c1);
  test_buffer(&table, &c1);

  // (x + z) * (y - z)
  bvarith_buffer_prepare(&c1, 100);
  bvarith_buffer_add_var(&c1, x);
  bvarith_buffer_add_var(&c1, z);
  bvarith_buffer_prepare(&c2, 100);
  bvarith_buffer_add_var(&c2, y);
  bvarith_buffer_sub_var(&c2, z);
  bvarith_buffer_mul_buffer(&c1, &c2);
  bvarith_buffer_normalize(&c1);
  test_buffer(&table, &c1);

  bvarith_buffer_prepare(&c1, 100);
  bvarith_buffer_add_var(&c1, x);
  bvarith_buffer_add_var(&c1, z);
  bvarith_buffer_prepare(&c2, 100);
  bvarith_buffer_add_var(&c2, y);
  bvarith_buffer_sub_var(&c2, z);
  bvarith_buffer_mul_buffer(&c1, &c2);
  bvarith_buffer_normalize(&c1);
  test_buffer(&table, &c1);

  // x * y * z^2
  bvarith_buffer_prepare(&c1, 100);
  bvarith_buffer_add_var(&c1, z);
  bvarith_buffer_square(&c1);
  bvarith_buffer_mul_var(&c1, y);
  bvarith_buffer_mul_var(&c1, x);
  bvarith_buffer_normalize(&c1);
  test_buffer(&table, &c1);

  bvarith_buffer_prepare(&c1, 100);
  bvarith_buffer_add_var(&c1, z);
  bvarith_buffer_square(&c1);
  bvarith_buffer_mul_var(&c1, y);
  bvarith_buffer_mul_var(&c1, x);
  bvarith_buffer_normalize(&c1);
  test_buffer(&table, &c1);

  printf("=== Final table ===\n");
  print_bvexp_table(stdout, &table);
  printf("\n");


  // remove two variables
  bvexp_table_remove_vars(&table, 11);
  printf("=== After removing two variables ===\n");
  print_bvexp_table(stdout, &table);
  printf("\n");

  // recheck: 1 + x + y
  bvarith_buffer_prepare(&c1, 100);
  bvarith_buffer_set_one(&c1);
  bvarith_buffer_add_var(&c1, x);
  bvarith_buffer_add_var(&c1, y);
  bvarith_buffer_normalize(&c1);
  test_buffer(&table, &c1);

  // recheck: (x + z) * (y - z)
  bvarith_buffer_prepare(&c1, 100);
  bvarith_buffer_add_var(&c1, x);
  bvarith_buffer_add_var(&c1, z);
  bvarith_buffer_prepare(&c2, 100);
  bvarith_buffer_add_var(&c2, y);
  bvarith_buffer_sub_var(&c2, z);
  bvarith_buffer_mul_buffer(&c1, &c2);
  bvarith_buffer_normalize(&c1);
  test_buffer(&table, &c1);

  bvarith_buffer_prepare(&c1, 100);
  bvarith_buffer_add_var(&c1, x);
  bvarith_buffer_add_var(&c1, z);
  bvarith_buffer_prepare(&c2, 100);
  bvarith_buffer_add_var(&c2, y);
  bvarith_buffer_sub_var(&c2, z);
  bvarith_buffer_mul_buffer(&c1, &c2);
  bvarith_buffer_normalize(&c1);
  test_buffer(&table, &c1);

  printf("=== Final table ===\n");
  print_bvexp_table(stdout, &table);
  printf("\n");



  // cleanup
  delete_bvarith64_buffer(&b1);
  delete_bvarith64_buffer(&b2);
  delete_bvarith_buffer(&c1);
  delete_bvarith_buffer(&c2);
  delete_bvexp_table(&table);
  delete_bv_vartable(&vtbl);
  cleanup_bvconstants();

  return 0;
}