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The Round function rounds a number. The round function in ASP lets you
round a number off to a set number of decimal points. This is great, for
example, to round dollar amounts off to the nearest cents. The Round
function rounds off a floating-point number (decimal) to a specified number
of decimal places. All you do is use the Round command, and provide
the number of decimal points to round it to. For example, if you
have a number and want it to have only 2 decimals points so it looks like
a dollar value, you would say :-
Response.write "Your final total is: $" & Round(CartAmt,2)
& " Dollars."
If you want to estimate the number of visitors you get in a given
day based on your monthly traffic, you don't want to end up with partial
visitors! So in this case you'd round to zero decimal points -
response.write "I get about " & Round(MonthVisit,0)
& " visitors each day."
The Syntax of the Round function is :-
| Round(expression[,numdecimalplaces]) |
Example#1 :-
Code :-
dim x
x=24.13278
document.write(Round(x))
Output :-
24
|
Example#2 :-
Code :-
dim x
x=24.13278
document.write(Round(x,2))
Output :-
24.13 |
There is One Mandatory Argument :-
- Number :- The Number argument is the number you wish
to round off. If the number of decimal places to round off to is not
specified, the number is rounded off to an integer.
Example#1 :-
Code :-
<%
=Round(1.123456789)
%>
Output :-
1
|
Example#2 :-
Code :-
<%
=Round(9.87654321)
%>
Output :-
10 |
Note :- The negative numbers are rounded down (more negative).
Example#3 :-
Code :-
<% =Round(-2.899999999) %>
Output :-
-3
|
Note :- Even numbers that are composed of the exact decimal .5,
such as 2.5, 4.50, or 22.500000, are rounded down (towards the negative
direction). Negative, even numbers are rounded up (towards the postive
direction). Odd number that are composed of the exact decimal .5, such
as 1.5, 3.50, or 21.500000, are rounded up (towards the positive direction).
Negative, odd numbers are rounded down (towards the negative direction).
Example#4 :-
Code :-
<% =Round(4.50) %>
<% =Round(3.5) %>
<% =Round(2.5000) %>
<% =Round(1.5) %>
<% =Round(0.50000) %>
<% =Round(-0.50) %>
<% =Round(-1.5) %>
<% =Round(-2.50000000) %>
<% =Round(-3.5) %>
<% =Round(-4.5) %>
Output :-
4
4
2
2
0
0
-2
-2
-4
-4
|
There is One Optional Argument :-
- NumDecimalPlaces :- The optional NumDecimalPlaces argument
specifies how many decimal places to round off to. A number indicating
how many places to the right of the decimal are included in the rounding.
If omitted, integers are returned by the Round function. Optional.
Example#1 :-
Code :-
<% =Round(1.123456789, 6) %>
Output :-
1.123457
|
Note :- The negative numbers are rounded down (more negative).
Example#2 :-
Code :-
<% =Round(-2.899999999, 2) %>
Output :-
-2.9
|
Note :- Round to even is a statistically more accurate rounding
algorithm than round to larger.
|
