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Re: [bug-gawk] awk integer math.
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From: |
Andrew J. Schorr |
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Subject: |
Re: [bug-gawk] awk integer math. |
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Date: |
Tue, 16 Sep 2014 09:27:53 -0400 |
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User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Tue, Sep 16, 2014 at 03:48:12AM -0400, Mark Cross wrote:
> awk fails to correctly calculate 6^36 (or equivalent 6**36).
>
>
> execute --> gawk 'BEGIN{print 6^36}'
> get --> 10314424798490536576964100096
> code for expected value --> export BC_LINE_LENGTH=0; echo "6^36"| bc -l
> expected correct value --> 10314424798490535546171949056
> diff --> 00000000000000001030792151040
>
> Using this version: gawk -V GNU Awk 4.0.1
Please refer to the documentation:
http://www.gnu.org/software/gawk/manual/html_node/Arbitrary-Precision-Arithmetic.html#Arbitrary-Precision-Arithmetic
And in particular:
http://www.gnu.org/software/gawk/manual/html_node/Arbitrary-Precision-Integers.html#Arbitrary-Precision-Integers
Regards,
Andy