-----Original Message----- From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of Marshall Clow Sent: Wednesday, July 11, 2012 5:38 PM To: John Maddock Cc: boost@lists.boost.org Subject: Re: [boost] Macro fo rBOOST_NO_NUMERIC_LIMITS_MAX_DIGITS10 or useBOOST_NO_NUMERIC_LIMITS_LOWEST
On Jul 11, 2012, at 9:20 AM, John Maddock wrote:
I have recently used BOOST_NO_NUMERIC_LIMITS_LOWEST to act as a proxy for support of numeric_limits<T>:: max_digits10 (as correctly suggested by John Maddock).
Do we need yet another new macro for this, say
BOOST_NO_NUMERIC_LIMITS_MAX_DIGITS10
or continue to use BOOST_NO_NUMERIC_LIMITS_LOWEST as a proxy.
I think the latter will suffice (despite its unfortunate name for this task).
But I think an addition to the configuration macro reference docs would be useful.
Actually, this is one C++11 macro that Marshall missed for renaming.
I didn't touch that macro, because I didn't think it was a C++11 one.
Looking back at the discussion from last month, I see a proposal to add a new macro named BOOST_NO_NUMERIC_LIMITS_MAX_DIGITS10, and when John asked for a patch, Paul contributed some bits, but not a complete patch; and no one else did.
Maybe if we asked him nicely ;-) he would volunteer to rename this one to BOOST_NO_CXX11_NUMERIC_LIMITS?
I don't think that this is a rename job. If I've misread the discussion (or misunderstood the situation), please let me know.
BOOST_NO_NUMERIC_LIMITS_LOWEST works as a proxy for BOOST_NO_NUMERIC_LIMITS_MAX_DIGITS10 but there are other new things added at CX11 too, so really BOOST_NO_NUMERIC_LIMITS_LOWEST turns out to be a bad name. John suggests renaming BOOST_NO_NUMERIC_LIMITS_LOWEST to BOOST_NO_CXX11_NUMERIC_LIMITS (and I think this is a god idea to avoid adding the already long list of macros). This macro BOOST_NO_CXX11_NUMERIC_LIMITS will then deal with the need for BOOST_NO_NUMERIC_LIMITS_MAX_DIGITS10, BOOST_NO_NUMERIC_LIMITS_LOWEST *and* all the other items added to numeric_limits at Cxx11. Hope this is clearer now. Paul PS And if this is done, we will need to update the docs. I will do this if you wish. --- Paul A. Bristow, Prizet Farmhouse, Kendal LA8 8AB UK +44 1539 561830 07714330204 pbristow@hetp.u-net.com