floor

floor(X)

X is a scalar, vector, or matrix.

The floor and ceil functions map a real number to the largest previous and the smallest following integer, respectively. Function round maps a real number to the largest previous or the smallest following integer with the round half up rule.

floor(2.1);
// output
2
floor(2.9);
// output
2
floor(-2.1);
// output
-3

ceil(2.1);
// output
3
ceil(2.9);
// output
3
ceil(-2.1);
// output
-2

round(2.1);
// output
2
round(2.9);
// output
3
round(-2.1);
// output
-2

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

floor(m);