scale_f_d         911 ext/gd/libgd/gd_interpolation.c     double scale_f_d = 1.0;
scale_f_d         919 ext/gd/libgd/gd_interpolation.c         scale_f_d = scale_d;
scale_f_d         948 ext/gd/libgd/gd_interpolation.c             dTotalWeight += (res->ContribRow[u].Weights[iSrc-iLeft] =  scale_f_d * (*pFilter)(scale_f_d * (dCenter - (double)iSrc)));