I'd be careful about dropping the high 32 bits of those values. For memory it's probably OK as long as you don't have more than 4GB. A safer approach would be to build a native 64 bit value from the low and high components of our UInt64 structure.
my $total_memory = &build64($memory_info->{"total_memory"});
----------------------------------------------------------------------------
build64
----------------------------------------------------------------------------
sub build64()
{
($UInt64) = (@_);
$low = $UInt64->{"low"};
$high = $UInt64->{"high"};
For some reason this doesn't work...
$value64 = Math::BigInt->new($high)->blsft(32)->bxor($low);
$value64 = Math::BigInt->new(Math::BigInt->new($high)->blsft(32))->bxor($low);
return $value64;
}
I guess that's assuming you don't have 64bit support builtin (which isn't the default) and you have the Math::BigInt module on your system.
-Joe
