Mail Archives: djgpp/1999/07/28/06:54:00
From: | jsc AT lds DOT co DOT uk
|
Newsgroups: | comp.os.msdos.djgpp
|
Subject: | Forming a float from 4 seperate bytes
|
Date: | Tue, 27 Jul 1999 18:37:16 GMT
|
Organization: | Deja.com - Share what you know. Learn what you don't.
|
Lines: | 25
|
Message-ID: | <7nku8s$hkl$1@nnrp1.deja.com>
|
NNTP-Posting-Host: | 194.73.88.189
|
X-Article-Creation-Date: | Tue Jul 27 18:37:16 1999 GMT
|
X-Http-User-Agent: | Mozilla/2.0 (compatible; MSIE 3.0; Windows 95)
|
X-Http-Proxy: | 1.0 x21.deja.com:80 (Squid/1.1.22) for client 194.73.88.189
|
X-MyDeja-Info: | XMYDJUIDbillynomates
|
To: | djgpp AT delorie DOT com
|
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
|
Reply-To: | djgpp AT delorie DOT com
|
Hello all, sorry for the post that isn't specifically related to DJGPP, but
it's the only C news group I'm on.
I'm writing an (old) 3DStudio4 file parser and found a problem in the way
that the vertex coordinates are listed. each floating point value is
represented by 4 bytes which I can access but can't combine to form the
original float.
Well, I sort of can. If I do it directly from the file and use
fread (&Xvalue,4,1,fp);
where fp is my file pointer, 4 = the sizeof(float) , 1 = I want to do this
once and Xvalue = the final float value I want to end up with, it works. I
don't know why - I just took it from a doc on the 3ds format. However I want
to unload the file to a buffer and then start parsing. I've done the reading
into the buffer, but now I don't know how to reform my float from the data, I
tried taking the 4 values and &-ing them together, but that doesn't work as
the final value I'm after is a float and I get an operand error. Any ideas on
how to take 4 integers and form the float? I'm surre it's easy but I can't
get it to work. Thanks Chris jsc AT lds DOT co DOT uk
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.
- Raw text -