extern const ushort g_8x16uSqrTab[];
#define CV_SQR_8U(x) cv::g_8x16uSqrTab[(x)+255]
-extern const char* g_HersheyGlyphs[];
-
extern const uchar g_Saturate8u[];
#define CV_FAST_CAST_8U(t) (assert(-256 <= (t) && (t) <= 512), cv::g_Saturate8u[(t)+256])
#define CV_MIN_8U(a,b) ((a) - CV_FAST_CAST_8U((a) - (b)))