rounding numbers in a specific values

By having this number Num=10.25

and It's wanted to round it to 10.5

What function should be used to round 10.25 to 10.5 ?

Thanks in advance

Answer 1

[Guillaume]

multiply by 2, round to the nearest integer, divide back by 2 => round to the nearest 1/2:

>> Num = 10.25;
>> round(Num*2)/2
ans =
         10.5

[Adel Emam]

thanks you alot . i appreciate that