Re: [Quantlib-dev] [QuantLib-svn] SF.net SVN: quantlib:[16086] trunk/QuantLib/ql/utilities/dataformatters.cpp

[Luigi B. <lui...@gm...>]

On Fri, 2009-03-27 at 14:43 +0000, na...@us... wrote:
> Revision: 16086
>           http://quantlib.svn.sourceforge.net/quantlib/?rev=16086&view=rev
> Author:   nando
> Date:     2009-03-27 14:43:52 +0000 (Fri, 27 Mar 2009)
> 
> Log Message:
> -----------
> removed awkward space before percent sign. Revert this if you don't agree

Actually, I don't.  It seems that there's no "right" way to do it, as
according to Wikipedia (under "percent sign")

There is no consensus as to whether or not to include a space between
the number and percent sign in English. Many authorities prescribe that
there should be no space, whilst others typographically require one for
various reasons; these include The International System of Units and the
ISO 31-0 standard, while the TeX typesetting system encourages it. This
is in accordance with the general rule of adding a non-breaking space
between a numerical value and its corresponding unit of measurement.
However, style guides – such as the Chicago Manual of Style – commonly
prescribe to write the number and percent sign without any space in
between.

However, I'd favor keeping the space. it's true that 5% might be a bit
more readable than 5 %, but on the other hand, an output like

1x5: model 10.04471%, market 11.48000% (-1.43529%)
2x4: model 10.51179%, market 11.08000% (-0.56821%)
3x3: model 10.70375%, market 10.70000% (+0.00375%)
4x2: model 10.83882%, market 10.21000% (+0.62882%)
5x1: model 10.94492%, market 10.00000% (+0.94492%)

(from the BermudanSwaption example) looks to me more awkward than the
alternative.

Luigi


-- 

Father's got the sack from the water-works 
For smoking of his old cherry-briar; 
Father's got the sack from the water-works 
'Cos he might set the water-works on fire.