C++ <limits> header file

C++ <limits> header file

[D. Vrabel]

Hi,

I noticed that my version of egcs (1.0.3) doesn't come with the standard
C++ header file <limits> (which defines the numeric_limits class) so I
wrote my own.  It's based on an out of date standards document (2-12-9996)
and is currently incomplete as I don't know what some of the values are.

Would anybody be interested in it?

David
--
David Vrabel
Engineering Undergraduate at University of Cambridge, UK.

Re: C++ <limits> header file

[Alexandre Oliva]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 543 bytes --]

On Mar  1, 1999, "D. Vrabel" <dv207@hermes.cam.ac.uk> wrote:

> I noticed that my version of egcs (1.0.3) doesn't come with the standard
> C++ header file <limits> (which defines the numeric_limits class) so I
> wrote my own.

Too bad you didn't notice they're already implemented in libstdc++-v3
(sourceware.cygnus.com) :-(

-- 
Alexandre Oliva http://www.dcc.unicamp.br/~oliva aoliva@{acm.org,computer.org}
oliva@{dcc.unicamp.br,gnu.org,egcs.cygnus.com,samba.org}
Instituto de Computação, Universidade Estadual de Campinas, SP, Brasil

Re: C++ <limits> header file

[Jason Merrill]

>>>>> Alexandre Oliva <oliva@dcc.unicamp.br> writes:

 > On Mar  1, 1999, "D. Vrabel" <dv207@hermes.cam.ac.uk> wrote:
 >> I noticed that my version of egcs (1.0.3) doesn't come with the standard
 >> C++ header file <limits> (which defines the numeric_limits class) so I
 >> wrote my own.

 > Too bad you didn't notice they're already implemented in libstdc++-v3
 > (sourceware.cygnus.com) :-(

Not really.  The version there is lifted from SGI STL, and is
MIPS-specific.  We should be generating it from enquire.

Jason

C++ <limits> header file

[D. Vrabel]

Hi,

I noticed that my version of egcs (1.0.3) doesn't come with the standard
C++ header file <limits> (which defines the numeric_limits class) so I
wrote my own.  It's based on an out of date standards document (2-12-9996)
and is currently incomplete as I don't know what some of the values are.

Would anybody be interested in it?

David
--
David Vrabel
Engineering Undergraduate at University of Cambridge, UK.

Re: C++ <limits> header file

[Alexandre Oliva]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 544 bytes --]

On Mar  1, 1999, "D. Vrabel" <dv207@hermes.cam.ac.uk> wrote:

> I noticed that my version of egcs (1.0.3) doesn't come with the standard
> C++ header file <limits> (which defines the numeric_limits class) so I
> wrote my own.

Too bad you didn't notice they're already implemented in libstdc++-v3
(sourceware.cygnus.com) :-(

-- 
Alexandre Oliva http://www.dcc.unicamp.br/~oliva aoliva@{acm.org,computer.org}
oliva@{dcc.unicamp.br,gnu.org,egcs.cygnus.com,samba.org}
Instituto de Computação, Universidade Estadual de Campinas, SP, Brasil

Re: C++ <limits> header file

[Jason Merrill]

>>>>> Alexandre Oliva <oliva@dcc.unicamp.br> writes:

 > On Mar  1, 1999, "D. Vrabel" <dv207@hermes.cam.ac.uk> wrote:
 >> I noticed that my version of egcs (1.0.3) doesn't come with the standard
 >> C++ header file <limits> (which defines the numeric_limits class) so I
 >> wrote my own.

 > Too bad you didn't notice they're already implemented in libstdc++-v3
 > (sourceware.cygnus.com) :-(

Not really.  The version there is lifted from SGI STL, and is
MIPS-specific.  We should be generating it from enquire.

Jason

Re: C++ <limits> header file

[peeter joot]

> > Too bad you didn't notice they're already implemented in libstdc++-v3
> > (sourceware.cygnus.com) :-(
>
>  Not really.  The version there is lifted from SGI STL, and is
>  MIPS-specific.  We should be generating it from enquire.

I have enquire modifications that I posted about a year ago for this.
I had posted this to the egcs list get some feedback because I didn't know
what to do with the signalling non-signalling nan stuff -- I basically
guessed at that part, but I didn't care too much at the time since I wasn't
using that part of numeric_limits<>.

I have since found out what these are (the intel assembly documention explains
these nicely), but I haven't touched this <limits> stuff since then, and these
problems still have to be addressed.

My approach was to have an input file and have enquire generate a sed script
that could be used to create a final <limits> header.  This way I didn't have
to embed the whole text or needlessly complicate enquire.

My enquire patch and the <limits> input file are still at:

http://www.cygnus.com/ml/egcs/1998-Feb/0938.html

It seems that nobody noticed or was interested at the time -- with either
some feedback or some help, this could be polished up for inclusion without
too much work.

Peeter
--
Peeter Joot                                          peeterj@ca.ibm.com
IBM DB2 Operating System Services

Re: C++ <limits> header file

[Gabriel Dos Reis]

>>>>>  <peeter_joot@VNET.IBM.COM> wrote:


[...]


> My enquire patch and the <limits> input file are still at:

> http://www.cygnus.com/ml/egcs/1998-Feb/0938.html

> It seems that nobody noticed or was interested at the time -- with either
> some feedback or some help, this could be polished up for inclusion without
> too much work.

I didn't notice your patch. I'll take at look at it and post
comments. Thanks. 

-- Gaby

Re: C++ <limits> header file

[Gabriel Dos Reis]

>>>>>  <peeter_joot@VNET.IBM.COM> wrote:


[...]


> My enquire patch and the <limits> input file are still at:

> http://www.cygnus.com/ml/egcs/1998-Feb/0938.html

> It seems that nobody noticed or was interested at the time -- with either
> some feedback or some help, this could be polished up for inclusion without
> too much work.

I didn't notice your patch. I'll take at look at it and post
comments. Thanks. 

-- Gaby

Re: C++ <limits> header file

[peeter joot]

> > Too bad you didn't notice they're already implemented in libstdc++-v3
> > (sourceware.cygnus.com) :-(
>
>  Not really.  The version there is lifted from SGI STL, and is
>  MIPS-specific.  We should be generating it from enquire.

I have enquire modifications that I posted about a year ago for this.
I had posted this to the egcs list get some feedback because I didn't know
what to do with the signalling non-signalling nan stuff -- I basically
guessed at that part, but I didn't care too much at the time since I wasn't
using that part of numeric_limits<>.

I have since found out what these are (the intel assembly documention explains
these nicely), but I haven't touched this <limits> stuff since then, and these
problems still have to be addressed.

My approach was to have an input file and have enquire generate a sed script
that could be used to create a final <limits> header.  This way I didn't have
to embed the whole text or needlessly complicate enquire.

My enquire patch and the <limits> input file are still at:

http://www.cygnus.com/ml/egcs/1998-Feb/0938.html

It seems that nobody noticed or was interested at the time -- with either
some feedback or some help, this could be polished up for inclusion without
too much work.

Peeter
--
Peeter Joot                                          peeterj@ca.ibm.com
IBM DB2 Operating System Services