Re: Strangeness when moving data through an array.
Re: Strangeness when moving data through an array.
- Subject: Re: Strangeness when moving data through an array.
- From: Sherm Pendley <email@hidden>
- Date: Wed, 1 Dec 2004 02:23:48 -0500
On Nov 30, 2004, at 11:55 PM, John Draper wrote:
Now, I take the data from "pkt" and I want to later stick it into a
16 bit (u_short), and would expect... short_test=258, but
after I execute this statement...
bcopy((u_short)&pkt[MSEQ], &short_test, 2);
short_test = 160
WHY? What's going on? How can I extract data from an array in any
arbitrary
index into it (even or odd), and still get back that 2 byte int
correctly?
You're typecasting a pointer (&pkt[MSEQ]) to an integer (u_short),
which smells fishy.
I'd say you probably need to cast to a different pointer type:
bcopy((u_short *)&pkt[MSEQ], &short_test, 2);
sherm--
Cocoa programming in Perl: http://camelbones.sourceforge.net
Hire me! My resume: http://www.dot-app.org
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