----Original Message---- From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of Paul Giaccone Sent: 07 June 2006 12:20 To: boost@lists.boost.org Subject: Re: [boost] [Review][PQS] Physical Quantities System review (May31through June 9)

Andy Little wrote:

...

Hi Paul,

"Paul A Bristow" <pbristow@hetp.u-net.com> wrote in message news:E1FneN9-00014T-OY@he303war.uk.vianw.net...

...

4 It isn't immediately obvious to me how to ensure output in SI 'engineering' multiples, depending on the value. For example, 0.123 m outputs as 1.23 mm, but 1234.5 m outputs as 1.2345 km.

...and this point too: 0.123 m = 123 mm or 1.23 decametres (but not 1.23 mm), so either the above is a bug or incorrectly transcribed.

<nit> 0.123 m = 1.23 decimetres = 0.0123 decametres. </nit> You can see why SI deprecated deca and deci. :-) -- Martin Bonner Martin.Bonner@Pitechnology.com Pi Technology, Milton Hall, Ely Road, Milton, Cambridge, CB4 6WZ, ENGLAND Tel: +44 (0)1223 203894