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On 24/05/06, Harald Arnesen <harald@×××××××.org> wrote: |
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> "Mike Huber" <michael.huber@×××××.com> writes: |
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> |
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> > Hi, |
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> > I'm just trying to do some quick calculations using bc, but the version |
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> > installed through portage truncates on multiplication/division. It didn't |
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> > used to do this 2 years ago when I was taking number theory, and there are |
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> > no USE flags available for sys-devel/bc to change this. From the manpage: |
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> |
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> $ bc |
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> bc 1.06 |
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> Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc. |
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> This is free software with ABSOLUTELY NO WARRANTY. |
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> For details type `warranty'. |
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> 101/3 |
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> 33 |
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> |
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> $ bc -l |
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> bc 1.06 |
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> Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc. |
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> This is free software with ABSOLUTELY NO WARRANTY. |
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> For details type `warranty'. |
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> 101/3 |
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> 33.66666666666666666666 |
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> -- |
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> Hilsen Harald. |
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> |
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> -- |
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> gentoo-user@g.o mailing list |
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> |
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> |
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|
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Hi, |
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|
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I have always understood bc has always truncated (or at least through |
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my general usage) whenever I have needed it to grow the decimal |
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precision I use the scale= option: |
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|
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$ echo "101/3" | bc |
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33 |
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$ echo "scale=10; 101/3" | bc |
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33.6666666666 |
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$ echo "scale=3; 101/3" | bc |
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33.666 |
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$ echo "101/3" | bc -l |
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33.66666666666666666666 |
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|
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-l auto sets the scale to 20 (as per manpage). Same version of bc. |
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|
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Thanks |
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Mark |
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|
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-- |
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