[CentOS] [OT] GNU bc base conversion

[Mike - st257]

On Mon, Aug 31, 2015 at 12:50 PM, Gordon Messmer <gordon.messmer at gmail.com>
wrote:

> On 08/31/2015 05:55 AM, Mike - st257 wrote:
>
>> I'm not an expert in bc, so I might be wrong, but it looks like setting
>>>>
>>> >the ibase inside a function is simply too late.  ibase affects how bc
>>> >interprets input.
>>> >
>>>
>> Thanks Gordon.
>> Big bummer given that behavior. :-/
>>
>
> I suppose that depends on what you're trying to accomplish.  Most
> conversions you can do entirely within bash, if that's your goal.
>

Yes indeed it can be done in bash. I figure at this point I'm going that
route.
Thanks!


>
> function dec_to_hex () { printf '%x\n' $1; }
> function hex_to_dec() { printf '%d\n' $(( 16#$1 )); }
> function hex_to_bin() { echo 'obase=2;' $(( 16#$1 )) | bc; }
>
> $ dec_to_hex 10
> a
> $ hex_to_dec a
> 10
> $ hex_to_bin a
> 1010
>
>
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Mike
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