Whole numbers

[Guest]

I've forgotten.

How do I round off numbers from an equation or round off to the third
decimal point for instance.

eg.


answers number is 12345.678910

I would like to see answer as 12345.67 or .68

Thanks

 

[user]

How do I round off numbers from an equation or round off to the third
decimal point for instance.

A simple method for rounding is to add 1/2 of the decimal place you wish
to round to, then perform an int function to remove the decimal point:

a=.4
a+=.5
a=int(a) 'a is now 0


a=1.26
a+=.05
a=int(a) ' a is now1.3

 

[One Handed Man \( OHM - Terry Burns \)]

Me.TextBox1.Text = Math.Round(5.123456, 3)


--

OHM ( Terry Burns )
. . . One-Handed-Man . . .
If U Need My Email ,Ask Me

Time flies when you don't know what you're doing

 

[Lucas Tam]

I've forgotten.

How do I round off numbers from an equation or round off to the third
decimal point for instance.

eg.


answers number is 12345.678910

I would like to see answer as 12345.67 or .68

Look at the functions:

System.Math.Round
FormatNumber
System.Math.Floor
System.Math.Ceiling

 

[Anon-E-Moose]

A simple method for rounding is to add 1/2 of the decimal place you wish
to round to, then perform an int function to remove the decimal point:

Why not use System.Math.round or one of the many other rounding functions?

seems easier : )

 

[Tom Dacon]

To round the number itself, use the Math.Round static method.

For example, Math.Round(123.45678, 3) produces 123.457.

To leave the number with its full precision, but print a rounded number, use
String.Format().

For example, String.Format("{0:0.000}", 123.45678) produces the string
"123.457"

One caution: the Math.Round() function uses "banker's rounding" which,
rounds to even digits if the number is halfway between; for example,
123.4565 and 123.4555 both round to 123.456.

However, the String.Format() function appears to round up, so that 123.4565
rounds to "123.457".

HTH,
Tom Dacon
Dacon Software Consulting

 

[Herfried K. Wagner [MVP]]

How do I round off numbers from an equation or round off to the third
decimal point for instance.

'Math.Round':

<URL:http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemMathClassRoundTopic.asp>

 

[BobJ]

<URL:http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemMathClass
RoundTopic.asp>

But how about Banker's rounding? I suspect that's included somewhere but I
haven't found it yet.
BobJ

 

[Guest]

Thanks for the help.

But I'd like to round to the second or third decimal point.

How do I do that?

 

[Herfried K. Wagner [MVP]]

But I'd like to round to the second or third decimal point.

\\\
Dim d As Double = Math.Round(12.3456, 3)
///

 

[Ricky W. Hunt]

A simple method for rounding is to add 1/2 of the decimal place you wish
to round to, then perform an int function to remove the decimal point:

a=.4
a+=.5
a=int(a) 'a is now 0


a=1.26
a+=.05
a=int(a) ' a is now1.3

Int will drop every thing to the right of the decimal place. So in this last
case a=1, not 1.3. The only way for this particular code to work is to shift
the number before and after the Int, as in:

a = 1.26
a += 0.05

a= Int(a * 10) / 10

 

[One Handed Man \( OHM - Terry Burns \)]

Are you blind ?, I already answered this ! See above

--

OHM ( Terry Burns )
. . . One-Handed-Man . . .
If U Need My Email ,Ask Me

Time flies when you don't know what you're doing

 

[Cor Ligthert]

Hi Terry,

However I was glad with the anser from Tom, that banking rouding is awful in
my idea, is it maybe used in England?

Cor

 

[BobJ]

Are you blind ?, I already answered this ! See above

I must be at least partially blind because I completely missed the
reference to banker's rounding the first time that I read your response.
Thank you for directing my attention to it so politely
BobJ

 

[One Handed Man \( OHM - Terry Burns \)]

--

OHM ( Terry Burns )
. . . One-Handed-Man . . .
If U Need My Email ,Ask Me

Time flies when you don't know what you're doing

 

[One Handed Man \( OHM - Terry Burns \)]

You'll get used to me, Im not that bad really !

;-)

--

OHM ( Terry Burns )
. . . One-Handed-Man . . .
If U Need My Email ,Ask Me

Time flies when you don't know what you're doing

 

[BobJ]

You'll get used to me, Im not that bad really !

;-)

At least no worse than I am! No need to choose weapons. Except perhaps a
weapon to bury that weird banker's rounding.
BobJ

 

[Jay B. Harlow [MVP - Outlook]]

Bob,
It appears that VS.NET 2005 (aka Whidbey, due out in 2005 sometime) will
have an option on Math.Round to use Banker's rounding or not.

http://lab.msdn.microsoft.com/libra...n-us/cpref/html/T_System_MidpointRounding.asp

http://lab.msdn.microsoft.com/libra...cpref/html/M_System_Math_Round_2_377913f1.asp

http://lab.msdn.microsoft.com/libra...cpref/html/M_System_Math_Round_3_377913f1.asp

Hope this helps
Jay