roundeven          74 src/number.c   static double roundeven(double);
roundeven        1373 src/number.c               q = roundeven(rx/ry);
roundeven        1375 src/number.c                   double rr = roundeven(rx - q*ry);
roundeven        1744 src/number.c       case SCM_ROUND_ROUND: r = roundeven(v); break;