or download this
$_ = "\x32\x54\x76\x98" # 2557891634 as a 32-bit unsigned LE int
. "\x32\x54\x76\x98" # -1737075662 as a 32-bit signed LE int
...
my @nums = unpack('VVvv', $_);
$_ = unpack('l', pack('L', $_)) for @nums[1]; # Fix signs of longs.
$_ = unpack('s', pack('S', $_)) for @nums[3]; # Fix signs of shorts.