interpolation_method  167 ext/gd/libgd/gd.h typedef double (* interpolation_method )(double);
interpolation_method  257 ext/gd/libgd/gd.h 	interpolation_method interpolation;
interpolation_method  908 ext/gd/libgd/gd_interpolation.c static inline LineContribType *_gdContributionsCalc(unsigned int line_size, unsigned int src_size, double scale_d,  const interpolation_method pFilter)
interpolation_method 2340 ext/gd/libgd/gd_interpolation.c 	interpolation_method interpolation_bak;