CV_RNG_COEFF      231 modules/core/include/opencv2/core/types_c.h     temp = (uint64)(unsigned)temp*CV_RNG_COEFF + (temp >> 32);
CV_RNG_COEFF       77 modules/core/src/rand.cpp #define  RNG_NEXT(x)    ((uint64)(unsigned)(x)*CV_RNG_COEFF + ((x) >> 32))