Re: Octave 3.4.2-rc2 release candidate available for ftp

[Ben Abbott]

On Jun 22, 2011, at 7:12 PM, John W. Eaton wrote:

> 
> The second release candidate of Octave 3.4.2 is now available from
> alpha.gnu.org in the directory /gnu/octave:
> 
>  511a77ea089772f8ffa1dd232f2421d5  octave-3.4.2-rc2.tar.gz
> 
>  -rw-r--r-- 1 1003 65534 17634466 Jun 22 23:07 octave-3.4.2-rc2.tar.gz
> 
> Even if you have been building Octave regularly from the Mercurial
> archive, it would help if you could build from this release candidate
> and report any problems.  We could especially use reports for Windows
> and OS X systems.
> 
> Unless there are reports of problems in the next couple of days, this
> will become the 3.4.2 release.
> 
> jwe

I'm able to build on MacOS with only one minor test failure. I used Apple's gcc 
4.2.1, the patched gfortran from AT&T, and fink for the dependencies.

>>>>> processing /Users/bpabbott/Downloads/octave-3.4.2-rc2/src/mappers.cc
  ***** assert(arg (single(-1)), single(pi));
!!!!! test failed
assert (arg (single (-1)),single (pi)) expected
 3.1416
but got
 3.1416
values do not match

If I recall correctly, this is due to how Apple has patched gcc to handle pi 
rounding for single precision. 

octave:4> diff ([arg(single (-1)), single(pi)])
ans =  2.3842e-07
octave:5> eps(single(1))
ans =  1.1921e-07

Ben