Lines Matching refs:sum
56 double sum = covar[i][j];
59 sum -= factor[i][k] * factor[j][k];
62 if (sum < threshold)
63 sum = 1.0;
64 factor[i][i] = sqrt(sum);
66 factor[j][i] = sum / factor[i][i];
72 double sum = covar_y[i + 1];
75 sum -= factor[i][k] * m->coeff[0][k];
77 m->coeff[0][i] = sum / factor[i][i];
82 double sum = m->coeff[0][i];
85 sum -= factor[k][i] * m->coeff[j][k];
87 m->coeff[j][i] = sum / factor[i][i];
93 double sum = m->coeff[j][i] * covar[i][i] - 2 * covar_y[i + 1];
96 sum += 2 * m->coeff[j][k] * covar[k][i];
98 m->variance[j] += m->coeff[j][i] * sum;