Re: [Discuss-gnuradio] building gnuradio on UltraSparc II / Solaris 10

[Eric Blossom]

On Thu, Dec 15, 2005 at 03:33:47PM -0500, cswiger wrote:
> FWIW, once you get gcc and the build environment setup right
> gnuradio 2.6 builds cleanly on Solaris, except for ONE item:
> 
> gr_math.cc:98
> 
> int
> gr_signbit (double x)
> {
>   //return std::signbit (x);
>   return (x);
> }
> 
> 
> std::signbit (x) creates an error, does not exist in std or something,
> the above 'fix' gets it to compile but I have no idea what problems
> it would create down the road.
> 
> 
> --Chuck

This is a better fix:

int
gr_signbit (double x)
{
  if (x < 0.0)
    return 1;
  return 0;
}

Does signbit exist in the default (non-std) namespace?
Is there a man page for it?
This probably needs a bit of autoconf hacking.


Eric