CV_SEQ_ELTYPE_MASK 1462 modules/core/include/opencv2/core/types_c.h #define CV_SEQ_ELTYPE( seq )   ((seq)->flags & CV_SEQ_ELTYPE_MASK)
CV_SEQ_ELTYPE_MASK   77 modules/imgproc/src/approx.cpp     cvStartWriteSeq( (chain->flags & ~CV_SEQ_ELTYPE_MASK) | CV_SEQ_ELTYPE_POINT,