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Full Discussion: Perl and binary workings
Top Forums Shell Programming and Scripting Perl and binary workings Post 31197 by WIntellect on Monday 4th of November 2002 08:46:27 AM
Old 11-04-2002
Data Perl and binary workings

Perhaps it's me - maybe I'm dumb and am getting this working solution wrong...

I have a binary value 00000011 in $binVal and I want to print the result in denary, so in perl I did as the perldoc -f oct told me to do and added a 0b prefix as so:
Code:
$binVal = "0b" . $binVal;

then I wanted to print the result, so I did:
Code:
print oct( $binVal );

If my binary calculations are right, I should get "3", instead I get "0" - why? where am I going wrong?

Cheers!
 

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GETINFO(1)						      General Commands Manual							GETINFO(1)

NAME
getinfo - get header information from a RADIANCE file SYNOPSIS
getinfo [ -d ][ file .. ] getinfo - DESCRIPTION
Getinfo reads the header of each RADIANCE file and writes it to the standard output. Octree and picture files are in a binary format, which makes it difficult to determine their content. Therefore, a few lines of text are placed at the beginning of each file by the RADI- ANCE program that creates it. The end of the header information and the start of the data is indicated by an empty line. The -d option can be used to print the dimensions of an octree or picture file instead. For an octree, getinfo -d prints the bounding cube (xmin ymin zmin size). For a picture, getinfo -d prints the y and x resolution (-Y yres +X xres). If no file is given, the standard input is read. The second form of getinfo with a hyphen simply removes the header and copies the body of the file from the standard input to the standard output. EXAMPLE
To print the header information from scene1.oct and scene2.hdr: getinfo scene1.oct scene2.hdr AUTHOR
Greg Ward SEE ALSO
oconv(1), pfilt(1), rhinfo(1), rpict(1), rvu(1) RADIANCE
1/15/99 GETINFO(1)
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