7592    double red_coefficient;  member
7624       data.red_coefficient = e->red.Y;  in image_transform_png_set_rgb_to_gray_ini()
7630          data.red_coefficient /= whiteY;  in image_transform_png_set_rgb_to_gray_ini()
7640          data.red_coefficient = 6968 / 32768.;  in image_transform_png_set_rgb_to_gray_ini()
7644          data.red_coefficient = .2126;  in image_transform_png_set_rgb_to_gray_ini()
7684       data.red_coefficient = (1 - total) * (ru & 0xffff) / 65535.;  in image_transform_png_set_rgb_to_gray_ini()
7685       total += data.red_coefficient;  in image_transform_png_set_rgb_to_gray_ini()
7689          data.red_to_set = data.red_coefficient;  in image_transform_png_set_rgb_to_gray_ini()
7692          data.red_to_set = fix(data.red_coefficient);  in image_transform_png_set_rgb_to_gray_ini()
7818                (fabs(o.red.Y - data.red_coefficient) > DBL_EPSILON ||  in image_transform_png_set_rgb_to_gray_set()
8001          gray = r * data.red_coefficient + g * data.green_coefficient +  in image_transform_png_set_rgb_to_gray_mod()
8008             graylo = DD(rlo * (data.red_coefficient-ce) +  in image_transform_png_set_rgb_to_gray_mod()
8014             grayhi = DU(rhi * (data.red_coefficient+ce) +  in image_transform_png_set_rgb_to_gray_mod()
8122             gray = r * data.red_coefficient + g * data.green_coefficient +  in image_transform_png_set_rgb_to_gray_mod()
8124             err = re * data.red_coefficient + ge * data.green_coefficient +  in image_transform_png_set_rgb_to_gray_mod()
8159             gray = r * data.red_coefficient + g * data.green_coefficient +  in image_transform_png_set_rgb_to_gray_mod()
8169             grayhi = rhi * data.red_coefficient + ghi * data.green_coefficient +  in image_transform_png_set_rgb_to_gray_mod()