Re: 970123: C++ interface to NetCDF

>To: Russ Rew <address@hidden>
>From: "Robert Shectman" <address@hidden>
>Subject: Re: 970123: C++ interface to NetCDF
>Organization: Lawrence Livermore National Laboratory
>Keywords: 199701232308.QAA11227

Hi Robert,

> On Jan 24,  7:43am, Russ Rew wrote:
> > Subject: Re: 970123: C++ interface to NetCDF
> > Please let us know if you discover any problems with it.  Thanks.
> >
> 
> Well since you mention it,
> 
> src/cxx/ncvalues.cc - line 156:
> 
>           as_string_implement(short)
>           as_string_implement(nclong)
>           as_string_implement(float)
>           as_string_implement(double)
> 
> 
> src/cxx/ncvalues.h - line 197:
> 
>           #define as_string_implement(TYPE)                         \
>           char* NcVal(TYPE)::as_string( long n ) const                      \
>           {                                                         \
>               char* s = new char[32];                               \
>               ostrstream(s, sizeof(s)) << the_values[n] << ends ;      \
>               return s;                                                     \
>           }
> 
> 
> On Digital Unix on the alpha:
> 
> >uname -a
> OSF1 frosty.llnl.gov V4.0 464 alpha
> >cxx -V
> DEC C++ V5.4-006 on Digital UNIX (Alpha)
> 
> 
> The compiler claims that there is no appropriate operator << for ostream
> 
> cxx: Error: ../ncvalues.cc, line 157: In this statement, the argument list
> "ostrstream(s,sizeof(s))<<the_values[n]" matches no "ostream::operator <<".
> as_string_implement(short)
> ^
> cxx: Error: ../ncvalues.cc, line 158: In this statement, the argument list
> "ostrstream(s,sizeof(s))<<the_values[n]" matches no "ostream::operator <<".
> as_string_implement(nclong)
> ^
> cxx: Error: ../ncvalues.cc, line 159: In this statement, the argument list
> "ostrstream(s,sizeof(s))<<the_values[n]" matches no "ostream::operator <<".
> as_string_implement(float)
> ^
> cxx: Error: ../ncvalues.cc, line 160: In this statement, the argument list
> "ostrstream(s,sizeof(s))<<the_values[n]" matches no "ostream::operator <<".
> as_string_implement(double)
> ^
> 
> 
> However the code does compile on sgi's and solaris.  I haven't had much
> time to investigate why this is happening at this point.

We have been using g++ on our DEC Alpha, because we don't have a license
for cxx.  The above messages look like a compiler error to me.  This
code compiles on all the other C++ platforms to which we have access.

Thanks for reporting this.

--Russ

_____________________________________________________________________

Russ Rew                                         UCAR Unidata Program
address@hidden                     http://www.unidata.ucar.edu