GNU bug report logs - #30453
Bug in BC calculator version 1.07.1

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Message #8 received at 30453 <at> debbugs.gnu.org (full text, mbox):

From: Martin Møller Skarbiniks Pedersen <traxplayer <at> gmail.com>
To: Martin Møller Skarbiniks Pedersen <traxplayer <at> gmail.com>
Cc: 30453 <at> debbugs.gnu.org
Subject: Re: bug#30453: Bug in BC calculator version 1.07.1
Date: Wed, 14 Feb 2018 23:33:29 +0100

This is not a bug.
From the man-page:

$ man bc | fgrep -A5 "expr * expr"
       expr * expr
              The result of the expression is the product of the two
expressions.

       expr / expr
              The  result  of  the  expression  is  the quotient of
the two expressions.  The scale of the result is the value of the
variable
              scale.


So expr * expr is not scaled but expr / expr is scaled.

Regards
Martin



On 14 February 2018 at 07:52, Thomas Bracken <t.bracken <at> shaw.ca> wrote:
> Hello,
>
> Your BC calculator does not do any truncation for the scale value
>
> when it does a multiplication.  See example below.
>
> It works fine on division, but not on multiplication.
>

This is not a bug.
From the man-page:

$ man bc | fgrep -A5 "expr * expr"
       expr * expr
              The result of the expression is the product of the two
expressions.

       expr / expr
              The  result  of  the  expression  is  the quotient of
the two expressions.  The scale of the result is the value of the
variable
              scale.


Regards
Martin

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