Isssue with converting double to int

[Curious]

Hi,

I have a double number and need to convert it to an int. Unfortunately
it simply drops the digit(s) after the decimal point. For example:

int requiredShares = (int)(1230.98);

The value of requiredShares is 1230. This is not right. The correct
number should be 1231 because that's the closest integer to 1230.98.

In summary, what I want is to round up to 1 if it's greater than .5
and round down to 0 if it's less than .5.

Anyone can tell me if there's any .NET utility that does what I want?

[Mark Salsbery [MVP]]

Re: Isssue with converting double to int

"Curious" <fir5tsight@yah oo.comwrote in message
news:3963e61e-47c1-49fc-bbe9-5dff0d5512f2@u5 7g2000hsf.googl egroups.com...

Hi,
>
I have a double number and need to convert it to an int. Unfortunately
it simply drops the digit(s) after the decimal point. For example:
>
int requiredShares = (int)(1230.98);
>
The value of requiredShares is 1230. This is not right. The correct
number should be 1231 because that's the closest integer to 1230.98.
>
In summary, what I want is to round up to 1 if it's greater than .5
and round down to 0 if it's less than .5.
>
Anyone can tell me if there's any .NET utility that does what I want?

int rounded = (int)System.Mat h.Round(1230.98 , 0);


Mark

--
Mark Salsbery
Microsoft MVP - Visual C++

[Jeroen Mostert]

Re: Isssue with converting double to int

Curious wrote:

I have a double number and need to convert it to an int. Unfortunately
it simply drops the digit(s) after the decimal point. For example:
>
int requiredShares = (int)(1230.98);
>
The value of requiredShares is 1230. This is not right. The correct
number should be 1231 because that's the closest integer to 1230.98.
>

Conversion by truncation is a time-honored tradition in C-derived languages,
and you're a blasphemer for suggesting it's "not right". Just so you know. :-)

In summary, what I want is to round up to 1 if it's greater than .5
and round down to 0 if it's less than .5.
>

What do you want to round to when it's exactly 0.5, then?

Use Math.Round(), *then* convert the result. Math.Round() also has an
overload for specifying how to round numbers that are exactly between two
integers.

--
J.

[Curious]

Re: Isssue with converting double to int

int rounded = (int)System.Mat h.Round(1230.98 , 0);

Thanks Mark! This works!

[Curious]

Re: Isssue with converting double to int

Jeroen:

What do you want to round to when it's exactly 0.5, then?

I don't have to be concerned about this situation.

Use Math.Round(), *then* convert the result. Math.Round() also has an
overload for specifying how to round numbers that are exactly between two
integers.

Thanks for letting me know. It works!