Re: new snapshot?

[John W. Eaton]

On 25-Feb-2010, Jaroslav Hajek wrote:

| The ARPACK failures are mysterious. Technically what has changed are
| the 1D constructors and 1D resize. I scanned through eigs-base.cc and
| eigs.cc but couldn't spot any problems. I'll try to compile a 64-bit
| ARPACK and also give it a shot, but right now it's more important for
| me to get the legends in FLTK backend.

Don't worry about the ARPACK problems.  I think I found the reason for
the failure.  Some of the ARPACK functions have Fortran LOGICAL values
in their argument lists and the prototypes in eigs-base.cc were using
int for them which isn't correct when using -fdefault-integer-8.  If
we expect all Fortran compilers to use 8 bytes for LOGICAL values when
compiling INTEGER values as 8 bytes, then we can just use
octave_idx_type in the prototypes.  Otherwise I guess we should use
different typedefs for Fortran INTEGER and LOGICAL arguments in the
prototypes.

Comments or suggestions?

Thanks,

jwe