Help! double to float

How can I change a double to a float?

Hi,
You can just cast the float as a double:
double d = 123.4;
float f = (float) d;
a double has better precision so you may lose some precision when casting to a float.
chris.

Similar Messages

Help with double and float

I added the (float) after the = in both and it fixed the top and not the bottom. "cant convert double to float" (as well as the answer to this, if somone could correct my terminology as well it would be appretiated. thanks in advance)
float torontoF = (float)(torontoC * 1.8) + 32;
     System.out.print (torontoF);
x      float stockholmC = (float)(stockholmF ? 32)* .5556;
     System.out.print (stockholmF);

Reposted and answered at:
http://forum.java.sun.com/thread.jspa?threadID=5219089
Do not reply here.

Casting arrays from double to float

Hi, wonder if anyone can help.
I have a method of a class that creates two double arrays (the value pointed to is a double type)
x[][]
y[][]
they are essentially co-ordinates. The first dimension of the array holds the polygon number, the second the point on that polygon for the x and y respectivly.
This method is called from (and therefore the arrays returned to) a class in an applet i am designing.
I now have to get these co-ords into a general path for display. A general path only takes float values. I have tried all the normal casting tricks to try to convert these doubles into floats and nothing is working. Do you have to do anything special because they are in arrays.
Any help would be appriciated.

There is nothing special about array except that you cannot cast them.
Instead you need to create a new set of arrays and copy/cast each value individually.

How to convert a String data to Double or Float???? Thank you

I need to convert String data to Double or Float , please help me about it. Thank you very muh!
String a=Integer.parseInt("1234"); convert to integer.

I found it but do not know if it is ok
float a= Float.valueof(String to
convert).floatValue();
may be it can be!!!
Thank you !!!!How did parseInt lead you do valueOf?
Look for something more consistent. A pattern.As I said earlier, it depends if he wants an object or a primitive.
� {�

Convert double precision float string to a number

I am a newbie with Labview.
I have a GPIB link with a vector voltmeter and I receive the data as a double precision float string (IEEE standard 754-1985). I would like it to be recognized as a number, but I can't find the proper conversion function. The string to convert is 8 byte long. Does anyone have an idea how to do it? Thank you!

Asumming your data is big-endian, you should be able to simply typecast it to a DBL (see attache LV 7.0 example).
(It is possible that your DBL string is little-endian, in this case it will be slightly more complicated. Let us know )Message Edited by altenbach on 05-27-2005 04:49 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
StringToDBL.vi ‏23 KB

Cannot explicit convert double.MaxValue/double.MinValue/float.MaxValue/float.MinValue to decimal

I'm try set double.MaxValue/double.MinValue/float.MaxValue/float.MinValue to NumericUpDown's Maximun/Minimum
It fail (compile error)
but variable and constant's explicit conversion is OK.
can anyone tell me why?
the screenshot is in below
http://i.imgur.com/woZXr0i.png

yes, your right!
I has been tried
If I assign it(MinValue/MaxValue) to a variable first and then explicit convert to a decimal
it will be pass compile, but it will throw exception when runtime
screenshot
http://i.imgur.com/TpD8guJ.png

Double to float

I found in APIs, there is a method: floatValue() to transfer double to float.But when I wrote the following code and compiled it, the error is:
myjava.java:437: double cannot be dereferenced
float ba=aa.floatValue();
program:
double aa=4;
float ba=aa.floatValue();
What's the problem in my program?
Thanks

That does not work because the floatValue() method exists in the Double wrapper class and not for the double primitive type. You should try either:
double aa = 4;
Double d = new Double(aa);
float ba = d.floatValue();or
double aa = 4;
float ba = (float)aa;

Viewing only x number of digits for double or float

I was wondering if I had a float or a double, and lets say I didn't want to see all those decimal places, is there a way for me to limit the number of decimal places that is outputted to like 3 or 4 instead of 10? Thanks for the help.

oh...
you probably wanted to know how to, lol
go to:
http://forum.java.sun.com/thread.jsp?forum=31&thread=313399
cheers.

How do you stop the help window from floating to the top?

Is there way to change the help window's behavior so that it acts like a normal window?
It takes so long to set up seeing the problem and the help at the same time, then go back to reading and then back again.
The floating to the top is a very unwellcome "Feature" and microsoft-like not Apple-like.

hmslfi wrote:
The floating to the top is a very unwellcome "Feature" and microsoft-like not Apple-like.
That depends on your POV. Some may prefer the default behaviour, because it doesn't allow the help window to be hidden by the working window.
Also, keep in mind that you can use the Minimise (yellow) button in the window's title bar.
However, if you really want to change the default floating window, there is a preference you can change with the defaults command:
$ defaults write com.apple.helpviewer NormalWindow -bool true
Alternatively, you can enable Help Viewer's developer mode
$ defaults write com.apple.helpviewer DevMode -bool true
(See
<http://www.macworld.com/article/158482/2011/03/hidehelpviewer.html>
for details.)

Converting double to float

This problem only occurs when dealing with large numbers or numbers with a lot of fraction digits.
Here is an example:
double d = 7.1E9;
float f1 = (float)d;
float f2 = new Float(d).floatValue();
System.out.println( d + " " + f1 + " " + f2);
The result is:
7.1E9 7.1000003E9 7.1000003E9
I tried other ways of converting to float (using DecimalFormat) but unfortunately nothing works. The resulting float is not the same as the original double.
Any ideas?
Thanks.
Igor.

float is only 32 bit while double is 64 bit, so you can easily get differences like that.
Is it a problem? If you results gets inaccurate you should stay with double or use BigDecimal if you really care about the precision. If it's because you want to round the result of before you display it, you can use DecimalFormat.

Need Help for configuring Floating static route in My ASA.

Hi All,
I need your support for doing a floating static route in My ASA.
I have tried this last time but i was not able to make it. But this time i have to Finish it.
Please find our network Diagram and configuration of ASA
route outside 0.0.0.0 0.0.0.0 6.6.6.6 1 track 1
route outside 0.0.0.0 0.0.0.0 6.6.6.6 1
route rOutside 0.0.0.0 0.0.0.0 3.3.3.3 10
route inside 10.10.4.0 255.255.255.0 10.10.3.1 1
route inside 10.10.8.0 255.255.255.0 10.10.3.1 1
route inside 10.10.9.0 255.255.255.0 10.10.3.1 1
route inside 10.10.15.0 255.255.255.0 10.10.3.1 1
route rOutside x.x.x.x 255.255.255.255 5.5.5.5 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 10.10.3.77 255.255.255.255 inside
http 10.10.8.157 255.255.255.255 inside
http 10.10.3.59 255.255.255.255 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
sla monitor 123
type echo protocol ipIcmpEcho 8.8.8.8 interface outside
num-packets 3
frequency 10
sla monitor schedule 123 life forever start-time now
crypto ipsec transform-set cpa esp-3des esp-md5-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto map vpn_cpa 1 match address acl_cpavpn
crypto map vpn_cpa 1 set peer a.a.a.a
crypto map vpn_cpa 1 set transform-set abc
crypto map vpn_cpa 1 set security-association lifetime seconds 3600
crypto map vpn_cpa interface outside
crypto isakmp identity address
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash md5
group 2
lifetime 86400
crypto isakmp policy 65535
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
track 1 rtr 123 reachability
telnet 10.10.3.77 255.255.255.255 inside
telnet 10.10.8.157 255.255.255.255 inside
telnet 10.10.3.61 255.255.255.255 inside
telnet timeout 500
ssh timeout 5
console timeout 0
threat-detection basic-threat
threat-detection statistics port
threat-detection statistics protocol
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
ntp server 10.10.3.14
webvpn
tunnel-group .a.a.a.a ipsec-attributes
pre-shared-key *
class-map inspection_default
match default-inspection-traffic
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect netbios
inspect rsh
inspect rtsp
inspect skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect tftp
inspect sip
inspect xdmcp
service-policy global_policy global
smtp-server 10.10.5.11
prompt hostname context
Cryptochecksum:eea6e7b6efe5d1a180439658c3912942
: end
i think half of the configuration stil there in the ASA.
Diagram.
Thanks
Roopesh

You have missed the last command in your configuration, Please check it again
route ISP1 0.0.0.0 0.0.0.0 6.6.6.6 track 1
route ISP2 0.0.0.0 0.0.0.0 3.3.3.3
sla monitor 10
type echo protocol ipIcmpEcho 8.8.8.8 interface ISP1
num-packets 3
frequency 10
sla monitor schedule 123 life forever start-time now
track 1 rtr 123 reachability
You can do NAT in same way, here the logical name of the interface will be different.
Share the result
Please rate any helpful posts.

Need help with Div Float Left...

Hi... this is a bit beginner, but can't seem to figure it out..
I'm trying to put three photos in a row... I am doing this by using divs with one floating left... but the third photo wants to drop to a second line below the other two...
Here is a link: http://www.robynjeandesign.com/bayareafacepainters/index.html
Help please
Thanks!

Don't overly complicate your code with too many divisions. Less is more.
Change this:
<div id="index_photos">
<div id="index_photo1"><img src="images/Face-Peacock.jpg" height="400" width="300"></div>
<div id="index_photo2"><img src="images/Face-Fairy-Crown.jpg" height="400" width="300"></div>
<div id="index_photo3"><img src="images/Face-Dragon.jpg" height="400" width="300"></div>
</div>
to this:
<img src="images/Face-Peacock.jpg" height="400" width="300">
<img src="images/Face-Fairy-Crown.jpg" height="400" width="300">
<img src="images/Face-Dragon.jpg" height="400" width="300">
Having said that, there may be times when you need 3 floats on a page. See link below for details.
http://alt-web.com/DEMOS/3-CSS-boxes.shtml
Nancy O.
Alt-Web Design & Publishing
Web | Graphics | Print | Media Specialists
http://alt-web.com/
http://twitter.com/altweb

How can i convert a double to float

double gallons;
double startOdometer;
double endOdometer;
double mpg;
double miles;
endOdometer = Double.parseDouble (inputs);
miles = endOdometer - startOdometer;
mpg = (miles/gallons) ;
gallons = miles/mpg;
mpg = Float.parseFloat(double);

You would use a cast.
double d = 1.4;
float f = (float) d;But why do you want to convert a double into a float and then store it back into a double?????

After casting double to float debugger shows wrong value

Hi,
My colleaque found an interesting behaviour with Java debugger. I have made some tests and here are the results:
Test code:
double dNum = 43.680659;
float fNum = (float) dNum;
System.out.println("double number = " + dNum);
System.out.println("float number = " + fNum);This is tested in Eclipse IDE 3.4.2 with following Java JRE versions:
- 1.4.2_19
- 1.5.0_14
- 1.6.0_10
And following JDK:
- jdk1.5.0_16
Eclipse IDE will show following values for variables in all platforms:
dNum = 43.680659
fNum = 43.74316Console will print:
double number = 43.680659
float number = 43.68066Testing also with command line debugger jdb. Java JRE version:
- 1.4.2_19
And following JDK:
- jdk1.5.0_16
Results are the same as in Eclipse IDE. Is there a bug in debugger environment?

I managed to find bug report of this issue:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6807341
Information:
Bug ID : 6807341
Synopsis : JDWP: float value reported incorrectly
Category : java:debugger
State : 3-Accepted, bug
Priority : 4-Low
Submit Date: 19-FEB-2009

Please help with column float problem in IE8

Hi there,
Sorry to be so pushy - but I am desperate for help!!
Having serious problems with my site in some PC's showing Internet Explorer 8. My right column floated right is moving down the page underneath the left column..
It shows fine on IE8 on my PC - however on my clients PC (vista with IE8) it is showing up as mentioned above. Is there a fix for this.
Here is my link http://www.dooks.com/pgs/welcome.html
The css is all there! If you need anything please let me know as I need to get this sorted - I have had serious issues with this site that I have never had before with other sites and am starting to think there is a bug in my software. I redid the index page and this one page (linked above) to see what my problems are - so help with query v appreciated.
Many thanks,
Karen

Lawrence_Cramer wrote:
A point to keep in mind is that IE8 is still in Beta.
Not anymore.
http://www.microsoft.com/Presspass/press/2009/mar09/03-18IE8AvailablePR.mspx
"REDMOND, Wash. — March 18, 2009 — Today Microsoft Corp. announced the availability of Windows Internet Explorer 8, the new Web browser that offers..."
Mark A. Boyd
Keep-On-Learnin' :-)

Help! double to float

Similar Messages

Maybe you are looking for