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hex to decimal

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# 1  
Old 07-02-2008
hex to decimal
hi all,

echo "ibase=16;obase=10;11" | bc

shouldn't i get 17? i am getting 11

i am trying to convert 11 (hex) to decimal

stuck!

JAK
# 2  
Old 07-02-2008
You should set obase before ibase:

Code:
radoulov@linux-jgly:~> bc<<<'ibase=16;obase=10;11'
11
radoulov@linux-jgly:~> bc<<<'obase=10;ibase=16;11'
17

# 3  
Old 07-02-2008
ah thx!
# 4  
Old 07-02-2008
The problem seems not to be in "bc", but in "dc". I executed your command (which seems to be correct IMHO) with the "-c" switch (compile only) to bc and it gave me:

Code:
16i
10o
11ps.

This command list seems to be correct.

When executing this inside dc i got the same erroneous result as you (AIX 5.3 here), but when i changed the output base to "2" i got "10001", which is correct. Also, when i use "8" as output base it gave me the corect result "21". I conclude that "dc" has some systematic error.

Edit: didn't see radoulovs hint - i didn't know that. *blushes*

bakunin
# 5  
Old 07-02-2008
ibase=16;obase=10 <--- here 10 is hexadecimal as ibase is already modified, decimal 17 ...
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