default(realprecision,38)
long_is_64 = (#(2^32) == 1);
#0.
#1
#1. == if (long_is_64==1, 2, 4)
length([x])
length(List())
length(List([1,2,3]))
length("abc")
matsize([1,2,3])
matsize([1,2,3]~)
matsize(matrix(2,3))
matsize(1)

sizebyte(0) == if (long_is_64, 16, 8)
sizebyte(x+1) == if (long_is_64, 80, 40)
sizebyte([x,y]) == if (long_is_64, 136, 68)
