Signed and unsigned variables

Robotics. Seems to be the answer to a lot of things I don't do. - Keith Chester [more]

		Chief Delphi > Technical > Programming
Signed and unsigned variables

Thread Tools

Rate Thread

Display Modes

05-01-2008, 22:23

dmlawrence dmlawrence is offline

MIT '14

FRC #1751 (Warriors)

Team Role: Alumni

Join Date: Jan 2007

Rookie Year: 2006

Location: Long Island

Posts: 63

dmlawrence is an unknown quantity at this point

Signed and unsigned variables

What is the proper method to cast from an unsigned to a signed variable?

For example, suppose that u is an unsigned int and i is a signed int.

When u is 0, i should be -32768.
When u is 32768, i should be 0.
When u is 65535, i should be 32767.

Which of the following is correct:
i = (unsigned int) u or
i = (unsigned int) (u - 32768)?

Thanks,
David

« Previous Thread | Portal | Next Thread »

Thread Tools
Show Printable Version Email this Page
Display Modes	Rate This Thread
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode	Rate This Thread:

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

Forum Jump

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
pic: Dean and Woodie Signed Saftey Glass	andrew348	Extra Discussion	8	27-03-2007 16:36
Labview dashboard and multiple variables	Joe Ross	LabView and Data Acquisition	2	15-03-2006 21:55
Math.h and Functions and Variables	amateurrobotguy	Programming	1	26-02-2005 03:19
problems assigning unsigned chars in FRC Code	LoyolaCubs	Programming	6	26-01-2004 23:21
My team is registered and signed up for Rutgers(rookie)!	Erodge	General Forum	5	11-10-2002 10:13

All times are GMT -5. The time now is 21:10.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.