-----Original Message-----
From: Andrew Makhorin [mailto:address@hidden
Sent: Monday, January 04, 2010 11:58 AM
To: Cheng,Jen-Min
Cc: address@hidden
Subject: Re: [Help-glpk] bigmul in glblib05.c
> With MS Visual Studio 2008, unsigned int is four
> bytes and unsigned short is two bytes.
Not only in ms. It is the general convention accepted in
ILP32
and LP64 programming models, which glpk conforms to. For
more details
please see:
http://www.unix.org/version2/whatsnew/lp64_wp.html .
> If the value of the unsigned
> int t is greater than maximum unsigned short, how
will x[i+j] =
> (unsigned short)t; be executed?
Since t is unsigned int, (unsigned short)t is its lower
16 bits,
i.e. it is the same as t % 65536U or t & 0xFFFFU.
FYI:
The routines bigmul and bigdiv implement algorithms from
"The Art
of Computer Programming" by Don Knuth (the second
volume).