Re: 1.8.0: C++-style cast

[Mike Gran]

--- Kevin Ryde <address@hidden> wrote:
> I don't think it's c++.  I'm guessing X_CAST is an OSF macro.  Dunno
> if it does anything good.  John Eaton contributed that, maybe he can
> say (Cc'ed).
> 
 
You're right.  When I googled for X_CAST, I came across this...

http://www.belgeler.org/autobook/autobook-Changeable-C--.html

which I didn't read too closely and took to understand that X_CAST was
C++ (which I don't use much.)  It also showed up in the Octave source,
which is C++, to reinforce my misperception.

For what it is worth, one of the strange machines I've been trying to
compile on (powerpc-ibm-aix4.3.3.0) has the code below in float.h and
math.h, which seems to align with the intent of the X_CAST in the guile
source.

extern  unsigned   int _DBLINF[2];
#define DINFINITY _DBLINF
#define DBL_INFINITY       (*((double *) (_DBLINF)))
#define DBL_QNAN   (*((double *) (DQNAN)))



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