How do you round numbers in .NET? I have numbers defined as Single and after
some calculations I want to round the result to the nearest tenth so I can
do comparison of results (the rfuzz problem). Does FORMAT round?
--
------------------------------------
Wayne Wengert wa***@wengert.o rg 4  5723 
Wayne Wengert <wa***@wengert. org> wrote: How do you round numbers in .NET? I have numbers defined as Single and after
some calculations I want to round the result to the nearest tenth so I can
do comparison of results (the rfuzz problem). Does FORMAT round?
If you want to compare results, then I suggest that rather than
rounding you just compare the difference between the expected results
and the ones you've got. You can specify the number of digits when you
format, but that'll use (I believe) bankers' rounding, which may or may
not be what you want.
--
Jon Skeet - <sk***@pobox.co m> http://www.pobox.com/~skeet/
If replying to the group, please do not mail me too
Wayne Wengert wrote: How do you round numbers in .NET? I have numbers defined as Single
and after some calculations I want to round the result to the nearest
tenth so I can do comparison of results (the rfuzz problem). Does
FORMAT round?
For rounding down:
System.Math.Flo or(myNumber);
For rounding up:
System.Math.Cei ling(myNumber);
For simple rounding (the kind you do in maths classes at school):
System.Math.Rou nd(myNumber);
Obviously these all return int types, and dont effect the parameter
variable.
Peace.
--
Phil Price
Student at The University Of Hull http://www.philprice.net http://www.dcs.hull.ac.uk
If you multiply the number by 10e10 before you round (using the Math.Round
above, or just CInt(num), then divide by 10e10, this will give you 10
decimal places.
Steven
"Phil Price" <ph**@philprice .net> wrote in message
news:be******** *@newsg4.svr.po l.co.uk... Wayne Wengert wrote:
How do you round numbers in .NET? I have numbers defined as Single
and after some calculations I want to round the result to the nearest
tenth so I can do comparison of results (the rfuzz problem). Does
FORMAT round?
For rounding down:
System.Math.Flo or(myNumber);
For rounding up:
System.Math.Cei ling(myNumber);
For simple rounding (the kind you do in maths classes at school):
System.Math.Rou nd(myNumber);
Obviously these all return int types, and dont effect the parameter
variable.
Peace.
--
Phil Price
Student at The University Of Hull
http://www.philprice.net
http://www.dcs.hull.ac.uk
Phil Price <ph**@philprice .net> wrote: For simple rounding (the kind you do in maths classes at school):
System.Math.Rou nd(myNumber);
No, that's *not* the kind of rounding most people do in maths classes
at school. At least, it certainly isn't the kind of rounding *I*
usually came across. It's bankers' rounding - halves round towards
even, so Math.Round(1.5) =2, Math.Round(2.5) =2, Math.Round(3.5) =4 etc.
--
Jon Skeet - <sk***@pobox.co m> http://www.pobox.com/~skeet/
If replying to the group, please do not mail me too This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: Norvin Laudon |
last post by:
Hi,
Can somebody explain the following, from the MSDN documentation for the
"System.Convert.ToInt32(double)" function
<quote>
Return Value
value rounded to the nearest 32-bit signed integer. If value is halfway
between two whole numbers, the even number is returned; that is, 4.5 is
|
by: spebola |
last post by:
I am using vb.net 2003 professional and I get the following results
when using the round method:
dim Amount as decimal = 180.255
Amount = Amount.Round(Amount, 2)
Amount now contains 180.25. I need it to contain 180.26.
Any ideas?
|
by: Zorpiedoman |
last post by:
Howcome:
Dim D as decimal = .5D
msgbox d.Round(D, 0)
this returns "0"
Now when I went to school .5 rounds UP to 1 not DOWN to zero?????!!!
Documentation says this, but what the heck are they thinking??? I just don't
|
by: Jiri Nemec |
last post by:
Hello all,
I have got one table with rounding values, table contains
prices and round types.
id price_from price_to rounding
1 0 1500 0.1
2 1500 5000 1
3 5000 15000 10
4 15000 0 100
|
by: cj |
last post by:
Lets assume all calculations are done with decimal data types so things
are as precise as possible.
When it comes to the final rounding to cut a check to pay dividends for
example in VB rounding seems to be done like this
3.435 = 3.44
3.445 = 3.44
Dim decNbr1 As Decimal
| | |
by: jdrott1 |
last post by:
i'm trying to round my currency string to end in 9. it's for a
pricing application.
this is the function i'm using to get the item in currency:
FormatCurrency(BoxCost, , , , TriState.True)
if an item is 41.87 i want the application to bring it up to 41.89
if an item is 41.84 i want the application to round down to 41.79
does anyone know how i could do this?
|
by: Spoon |
last post by:
Hello everyone,
I don't understand how the lrint() function works.
long lrint(double x);
The function returns the nearest long integer to x, consistent with the
current rounding mode. It raises an invalid floating-point exception if
the magnitude of the rounded value is too large to represent. And it
raises an inexact floating-point exception if the return value does not
|
by: md |
last post by:
Hi
Does any body know, how to round a double value with a specific number
of digits after the decimal points?
A function like this:
RoundMyDouble (double &value, short numberOfPrecisions)
It then updates the value with numberOfPrecisions after the decimal
|
by: jacob navia |
last post by:
Hi
"How can I round a number to x decimal places" ?
This question keeps appearing. I would propose the following
solution
#include <float.h>
#include <math.h>
|
by: bdsatish |
last post by:
The built-in function round( ) will always "round up", that is 1.5 is
rounded to 2.0 and 2.5 is rounded to 3.0.
If I want to round to the nearest even, that is
my_round(1.5) = 2 # As expected
my_round(2.5) = 2 # Not 3, which is an odd num
I'm interested in rounding numbers of the form "x.5" depending upon
whether x is odd or even. Any idea about how to implement it ?
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
| | |
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
| | |
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |
