round

round(X, [precision])

X is a scalar/vector/matrix.

precision (optional) is an integer indicating the number of digits (up to 10) after the decimal point. The default value is 0.

Round a number to the specified number of digits after the decimal point with the round half up rule.

In comparison, functions floor and ceil map a number to the largest previous or the smallest following integer, respectively.

round 2.1;
// output: 2

round 2.9;
// output: 3

round -2.1;
// output: -2

round(2.154,2);
// output: 2.15

round(2.156,2);
// output: 2.16

ceil 2.1;
// output: 3

ceil 2.9;
// output: 3

ceil -2.1;
// output: -2

floor 2.1;
// output: 2

floor 2.9;
// output: 2

floor -2.1;
// output: -3

m = 1.1 2.2 3.3 4.4 5.5 6.6 7.7 8.8 9.9 10$2:5;
m;

round m;