flt_g_sum 299 ext/gd/libgd/gd_filter.c float flt_r_sum, flt_g_sum, flt_b_sum; flt_g_sum 320 ext/gd/libgd/gd_filter.c flt_r_sum = flt_g_sum = flt_b_sum = 0.0; flt_g_sum 366 ext/gd/libgd/gd_filter.c flt_g_sum += flt_g[j][i]; flt_g_sum 376 ext/gd/libgd/gd_filter.c if (flt_g_sum != 0.0) { flt_g_sum 377 ext/gd/libgd/gd_filter.c flt_g[j][i] /= flt_g_sum;