ROUNDDEC Round to a specified number of decimals. Y = ROUNDDEC(X, N) rounds the elements of X to N decimals. For instance, rounddec(10*sqrt(2) + i*pi/10, 4) returns 14.1421 + 0.3142i See also: ROUND, FIX, FLOOR, CEIL, ROUNDDIG, TRUNCDEC, TRUNCDIG.