ceil

Syntax

ceil(X)

Arguments

X is a scalar/vector/matrix.

Details

Functions floor and ceil 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.

Examples

$ ceil(2.1);
3
$ ceil(2.9);
3
$ ceil(-2.1);
-2

$ floor(2.1);
2
$ floor(2.9);
2
$ floor(-2.1);
-3

$ round(2.1);
2
$ round(2.9);
3
$ round(-2.1);
-2

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

0	1	2	3	4
1.1	3.3	5.5	7.7	9.9
2.2	4.4	6.6	8.8	10

$ ceil(m);

0	1	2	3	4
2	4	6	8	10
3	5	7	9	10