42 " if (v_in[] >= weight[]) " 44 " var lower_bound := trunc(weight[] / 2); " 45 " var upper_bound := v_in[] - lower_bound; " 49 " for (var i := lower_bound; i < upper_bound; i += 1) " 51 " for (var j := -lower_bound; j <= lower_bound; j += 1) " 53 " v_out[i] += weight[j + lower_bound] * v_in[i + j]; " 57 " v_out /= sum(weight); " 60 const std::size_t n = 1024;
65 const T
pi = T(3.141592653589793238462643383279502);
67 srand(static_cast<unsigned int>(
time(0)));
70 for (T
t = T(-5);
t <= T(+5);
t += T(10.0 / n))
72 T noise = T(0.5 * (rand() / (RAND_MAX + 1.0) - 0.5));
73 v_in.push_back(sin(2.0 *
pi *
t) + noise);
76 v_out.resize(v_in.size());
80 symbol_table.add_vector(
"v_out",v_out);
86 parser.compile(sgfilter_program,expression);
90 for (std::size_t i = 0; i < v_out.size(); ++i)
92 printf(
"%10.6f\t%10.6f\n",v_in[i],v_out[i]);
98 savitzky_golay_filter<double>();