bf                131 ext/gd/libgd/gd_filter.c 	double rf,gf,bf;
bf                160 ext/gd/libgd/gd_filter.c 			bf = (double)b/255.0;
bf                161 ext/gd/libgd/gd_filter.c 			bf = bf-0.5;
bf                162 ext/gd/libgd/gd_filter.c 			bf = bf*contrast;
bf                163 ext/gd/libgd/gd_filter.c 			bf = bf+0.5;
bf                164 ext/gd/libgd/gd_filter.c 			bf = bf*255.0;
bf                174 ext/gd/libgd/gd_filter.c 			bf = (bf > 255.0)? 255.0 : ((bf < 0.0)? 0.0:bf);
bf                176 ext/gd/libgd/gd_filter.c 			new_pxl = gdImageColorAllocateAlpha(src, (int)rf, (int)gf, (int)bf, a);
bf                178 ext/gd/libgd/gd_filter.c 				new_pxl = gdImageColorClosestAlpha(src, (int)rf, (int)gf, (int)bf, a);