flt_r_sum 299 ext/gd/libgd/gd_filter.c float flt_r_sum, flt_g_sum, flt_b_sum; flt_r_sum 320 ext/gd/libgd/gd_filter.c flt_r_sum = flt_g_sum = flt_b_sum = 0.0; flt_r_sum 365 ext/gd/libgd/gd_filter.c flt_r_sum += flt_r[j][i]; flt_r_sum 373 ext/gd/libgd/gd_filter.c if (flt_r_sum != 0.0) { flt_r_sum 374 ext/gd/libgd/gd_filter.c flt_r[j][i] /= flt_r_sum;