On Jan 15, 2012, at 8:07 AM, Jerry Feldman wrote:
Actually, most spreadsheets use doubles.
Yes, they do, and Microsoft has a support page of workarounds for IEEE rounding
errors in various versions of Excel because of them:
http://support.microsoft.com/kb/214118
--Rich P.
On 01/15/2012 11:06 AM, Richard Pieri wrote:
On Jan 15, 2012, at 8:07 AM, Jerry Feldman wrote:
Actually, most spreadsheets use doubles.
Yes, they do, and Microsoft has a support page of workarounds for IEEE
rounding errors in various versions of Excel because of them:
On Jan 15, 2012, at 11:44 AM, Jerry Feldman wrote:
So, while the OP could certainly use canned BCD libraries or integers,
using floats and doubles should work fine for most personal stuff.
Maybe. I still think that the right way to do it is with arbitrary precision
BCD, but that's probably
On 01/15/2012 12:25 PM, Richard Pieri wrote:
On Jan 15, 2012, at 11:44 AM, Jerry Feldman wrote:
So, while the OP could certainly use canned BCD libraries or integers,
using floats and doubles should work fine for most personal stuff.
Maybe. I still think that the right way to do it is with
I have had issues with IBMs packed decimal being to short (8 bytes,
giving 15 decimal digits plus a sign) for keeping assets of large
companies. (yes, very large. Normally we resorted to either writing
our own math package or using 'dollar only' accounting. The IRS
normally is OK with that.
On Jan 14, 2012, at 1:23 PM, ma...@mohawksoft.com wrote:
That's a HORRIBLE idea! 3 decimal places are worse that IEEE. If it just
a
home accounting package, use doubles. If it is for the banking industry
use a financial math library.
IEEE-754 is exactly what you don't want to use.
On Fri, Jan 13, 2012 at 8:13 PM, Jack Coats j...@coats.org wrote:
When I did mainframe bean counting in the last century, we basically
kept a database with the 'end of year' and each 'end of month' amounts
for each account, and a MTD (month to date) summery. We kept the in
the month journal
On Jan 15, 2012, at 1:25 PM, Daniel C. wrote:
Richard, I'm kind of curious what you have to say about double-entry
bookkeeping.
It's overkill for most personal finances. Take a look at GNUCash if you want
to see how a double-entry financial package works.
--Rich P.
On Jan 15, 2012, at 1:56 PM, ma...@mohawksoft.com wrote:
You are confusing display of a double with use of a double.
0.36999556 is numerically, with finite precision less than
15
decimal places, effectively 0.37.
No, I'm not. While .36999 etc. is effectively 0.37, it isn't
Jerry Feldman wrote:
On 01/14/2012 08:23 PM, Bill Bogstad wrote:
As I understand it, they are required by FCC regulations to transmit
rebroadcasts of over the air channels in the clear.
They must provide free equipment to their basic subscribers...
Yes, the letter reiterated the same deal
I think we all agree, for finances we want integer math, no matter how
we implement it. That is counting pennies or mills at the unit of
measure.
Floating point and binary conversions with their apparent
inconsistencies are beyond what we are wanting to live with (like
rounding errors, etc).
On 01/15/2012 01:25 PM, Daniel C. wrote:
On Fri, Jan 13, 2012 at 7:43 PM, Richard Pieri richard.pi...@gmail.com
wrote:
You could go with a double-entry system. It's more complex to write and use
but double-entry book-keeping ensures that mistakes and errors are caught
immediately.
I
IBM's packed decimal had an effectively unlimited number of digits that
the COBOL or PL/1 programmer expressed (such as the COBOL 999.99 has
9 digits with 2 to the right of the decimal point and took up 5 bytes
with the sign taking up the rightmost nybble. External decimal is
similar except
On 01/15/2012 02:51 PM, Richard Pieri wrote:
On Jan 15, 2012, at 1:56 PM, ma...@mohawksoft.com wrote:
You are confusing display of a double with use of a double.
0.36999556 is numerically, with finite precision less than 15
decimal places, effectively 0.37.
No, I'm not. While
On Jan 15, 2012, at 4:13 PM, ma...@mohawksoft.com wrote:
0.999 for all intent and purposes is the same a one. And a 0
with an infinite number of 9s after the decimal point equals one.
This is true for scientific math, but not for financial math. I find it
confusing that you make
On 01/15/2012 04:21 PM, Jack Coats wrote:
I think we all agree, for finances we want integer math, no matter how
we implement it. That is counting pennies or mills at the unit of
measure.
Floating point and binary conversions with their apparent
inconsistencies are beyond what we are
Rich Braun wrote:
Tom Metro wrote:
If you use MythTV as a front-end, have you tried XBMC? If so, why do you
prefer MythTV's front-end?
Thanks to your posting, I just did. It was a F R U S T R A T I N G waste of 2
hours of my life. The bottom line is summed up at
On 01/15/2012 02:51 PM, Richard Pieri wrote:
On Jan 15, 2012, at 1:56 PM, ma...@mohawksoft.com wrote:
You are confusing display of a double with use of a double.
0.36999556 is numerically, with finite precision less than
15
decimal places, effectively 0.37.
No, I'm not. While
On Jan 15, 2012, at 6:19 PM, ma...@mohawksoft.com wrote:
To address the assertion that you can't represent some numbers exactly,
this is partially true. You can use doubles for calculation, but you can't
just use printf( %f); to display the value. You need to play some
tricks. with floor(),
Rich Braun wrote:
Tom Metro suggested:
And the best way to break free of the old-world TV model that the
existing studios, networks, and cable companies are clinging to is to
reduce barriers for the new upstarts to reach our living rooms.
Go to Best Buy and take a look at their TV
On Sun, Jan 15, 2012 at 6:19 PM, ma...@mohawksoft.com wrote:
That said, there are subtle differences between the two, but beyond that
there are different expectations of what precision means. For instance, if
you were to write a amortization calculator, you might be tempted to carry
Greetings Everyone,
I have a 6 disk Raid 5 on a Proliant ML350 G3 running Ubuntu 10.04 32-bit
and one of the disks failed. No matter what I do I can't get the
replacement disk to rebuild. It comes online, rebuilds for 20 minutes then
shuts off. I've tried downloading the HP Array utilities for
From: discuss-bounces+blu=nedharvey@blu.org [mailto:discuss-
bounces+blu=nedharvey@blu.org] On Behalf Of Tom Metro
It's easy to speculate that RedHat doesn't get the volume that CentOS
does because it costs money, but what does this say about Ubuntu Server,
which although commercial
From: discuss-bounces+blu=nedharvey@blu.org [mailto:discuss-
bounces+blu=nedharvey@blu.org] On Behalf Of Chris O'Connell
I have a 6 disk Raid 5 on a Proliant ML350 G3 running Ubuntu 10.04 32-bit
and one of the disks failed. No matter what I do I can't get the
replacement disk to
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